Aptitude Questions And Answers

141⟩ In 8*8 chess board what is the total number of squares refers odel

We discovered that there are 204 squares on the board We found that you would add the different squares - 1 + 4 + 9 + 16+ 25 + 36 + 49 + 64.

Also in 3*3 tic tac toe board what is the total no of squares

Ans 14 ie 9+4(bigger ones)+1 (biggest one)

If you ger 100*100 board just use the formula

the formula for the sum of the first n perfect squares is

n x (n + 1) x (2n + 1)

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6

if in this formula if you put n=8 you get your answer 204

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142⟩ A person was fined for exceeding the speed limit by 10mph.another person was also fined for exceeding the same speed limit by twice the same if the second person was traveling at a speed of 35 mph. find the speed limit

(x+10)=(x+35)/2

soling the eqn we get x=15

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143⟩ When ¾ of a units digit is added to the tens digit of a two number, the sum of the digits becomes 10. If ¼ of the tens digit added to the units digit, then the sum of the digits is 1 less than the previous. Find the number.a) 94b) 84c) 48d) 88

Let the given no. be xy

(3/4)y+x=10

(1/4)x+y=9

By solving these two eqns xy=48

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144⟩ Wind flows 160 miles in 330min.for 80 miles how much time required?

for 160 miles time taken is 330 minutes

for 80 miles time taken ?

160miles---330 minutes

80---------x minutes

where x=(80*330)/160=165 minutes

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145⟩ Suppose in a pot 20 cards are there label 1-20 on that. Find the probability of getting two prime?

8/20 = 2 / 5

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146⟩ In some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held?

the answer is 138 matches

explanation:since one player gets a bye in each round,he will reach the finals of the tournament without playing a match.

therefore 137 matches should be played to detemine the second finalist from the remaining 138 players(excluding the 1st player)

therefore to determine the winner 138 matches shd be played.

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147⟩ What is the size of integer variable in JAVA?

4 bytes

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148⟩ Find the Value and Express in DecimalIf A= 0 0 0 0 1 1 1 1B= 0 0 1 1 0 0 1 1C= 0 1 0 1 0 1 0 1Then find the value of [A U C] U B and express it in decimal

A = 0 0 0 0 1 1 1 1

B = 0 0 1 1 0 0 1 1

C = 0 1 0 1 0 1 0 1 (OR-ing)

------------------------

0 1 1 1 1 1 1 1

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149⟩ If 5xx+14x+k=0 having two reciprocal roots find the value of k?

product of roots of eqn a*x^2+b*x+c=0 is c/a

here product of roots =1

=> k/5=1

=>k=5

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150⟩ Ten boxes are there. Each ball weighs 100 gms. One ball is weighing 90 gms.i) If there are 3 balls (n=3) in each box, how many times will it take to find 90 gms ball?ii) with n=10iii) with n=9

6 Chances.

First keep 5 boxes in each in a balance. Then the one with low weight. Take it divide 5 boxes as 2-2-1.

Keep 2-2 in each of balance. If both weigh same... then take the one left. In which we have 3 balls.

1-1-1

Keep any 2 balls in balance. If both weigh the same. The one left is of low weight..!

Else if both don't weigh the same then the one with low weight is the one req. as such is for n 10.

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151⟩ If a company produces 15 different model of TV sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model?

The answer is 9

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152⟩ 2 trees are there, One grows at 3/5 of the other. In 4 years total growth of the trees is 8 ft. What growth will smaller tree have in 2 years?

THE BIG TREE GROWS 8FT IN 4 YEARS=>THE BIG TREE GROWS 4FT IN 2 YEARS.WHEN WE DIVIDE 4FT/5=.8*3=>2.4

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153⟩ Sum of three consecutive nos isA)10B)22C)25D)30E)40

9 plus 10 plus 11 equals 30

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154⟩ Age of a person increased by 10% from last year. What is the current ratio from last year.a.110b.1110c.1112Which one is correct?

b) 11 to 10

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155⟩ All persons know either swimming or rowing. There are 14 persons who know only swimming and 14 persons who know only rowing. 8 tickets sold for rowing. How many people are there for swimming?

6 swimming people

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156⟩ A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

The correct answer is 38.5. this can be found out using area of sector formula=pi*R^2*theta/360=pi*7^2*90/360=38.5sqm

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157⟩ The storage space required is given by the function P(N) = 4000 √N, where N is the number of boxes used. Find the percentage change in storage if the number of boxes is increased by 1%.(a) 0.75%(b) 0.25%(c) 0.5%(d) 1%(e) 2%

New no. of boxes=101n/100

increase=4000/n-400000/101n=4000/n*1/101

ans=4000/n*1/101/4000/n

=1/101*100

=1%

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158⟩ Tanyas grandfather was 8 times older to her 16 years ago. He would be three times of her age 8 years from now. Eight years ago what was ratio of Tanyas age to her grandfather?

at -16 the ratio is 8

at -8 the ratio is ?

at 0 the ratio is ?

at +8 the ratio is 3

so the ratio went down from 8 to 3 (5times) in 3 period of 8 year.

i.e. every 8 year is goes down by 5/3

so after one period of 8 years it was 24/3 - 5/3 = 19/3 or 6.33

so 8 years ago he was 6.33 years older than her.

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159⟩ If the area of a square has increased by 60%, by what percentage has its side increased?

answer, about 26%

square of 10cm by 10cm equal 100cm2

for it to increase by 60% then the new size is 160cm2

so each side would now be about 12.6cm by 12.6 cm

then each side went from 10 to 12.6cm for an increase of about 26%

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160⟩ Peter and Paul were friends. After six years Paul will be twice as old as Peter was when peter was as old as Paul. If sum of their ages is 36 find the age of Peter?

Peter + Paul = 36

in 6 years

Peter + 2 Peter = 42

So

Peter = 14 (in 6 years)

So now

Peter = 8

and

Paul = 22 (36-8)

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Aptitude

Home Basic Common Aptitude

332 Aptitude Questions And Answers

141⟩ In 8*8 chess board what is the total number of squares refers odel

142⟩ A person was fined for exceeding the speed limit by 10mph.another person was also fined for exceeding the same speed limit by twice the same if the second person was traveling at a speed of 35 mph. find the speed limit

143⟩ When ¾ of a units digit is added to the tens digit of a two number, the sum of the digits becomes 10. If ¼ of the tens digit added to the units digit, then the sum of the digits is 1 less than the previous. Find the number.a) 94b) 84c) 48d) 88

144⟩ Wind flows 160 miles in 330min.for 80 miles how much time required?

145⟩ Suppose in a pot 20 cards are there label 1-20 on that. Find the probability of getting two prime?

146⟩ In some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held?

147⟩ What is the size of integer variable in JAVA?

148⟩ Find the Value and Express in DecimalIf A= 0 0 0 0 1 1 1 1B= 0 0 1 1 0 0 1 1C= 0 1 0 1 0 1 0 1Then find the value of [A U C] U B and express it in decimal

149⟩ If 5xx+14x+k=0 having two reciprocal roots find the value of k?

150⟩ Ten boxes are there. Each ball weighs 100 gms. One ball is weighing 90 gms.i) If there are 3 balls (n=3) in each box, how many times will it take to find 90 gms ball?ii) with n=10iii) with n=9

151⟩ If a company produces 15 different model of TV sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model?

152⟩ 2 trees are there, One grows at 3/5 of the other. In 4 years total growth of the trees is 8 ft. What growth will smaller tree have in 2 years?

153⟩ Sum of three consecutive nos isA)10B)22C)25D)30E)40

154⟩ Age of a person increased by 10% from last year. What is the current ratio from last year.a.110b.1110c.1112Which one is correct?

155⟩ All persons know either swimming or rowing. There are 14 persons who know only swimming and 14 persons who know only rowing. 8 tickets sold for rowing. How many people are there for swimming?

156⟩ A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

157⟩ The storage space required is given by the function P(N) = 4000 √N, where N is the number of boxes used. Find the percentage change in storage if the number of boxes is increased by 1%.(a) 0.75%(b) 0.25%(c) 0.5%(d) 1%(e) 2%

158⟩ Tanyas grandfather was 8 times older to her 16 years ago. He would be three times of her age 8 years from now. Eight years ago what was ratio of Tanyas age to her grandfather?

159⟩ If the area of a square has increased by 60%, by what percentage has its side increased?

160⟩ Peter and Paul were friends. After six years Paul will be twice as old as Peter was when peter was as old as Paul. If sum of their ages is 36 find the age of Peter?

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Aptitude

Home Basic Common Aptitude

332 Aptitude Questions And Answers

141⟩ In 8*8 chess board what is the total number of squares refers odel

142⟩ A person was fined for exceeding the speed limit by 10mph.another person was also fined for exceeding the same speed limit by twice the same if the second person was traveling at a speed of 35 mph. find the speed limit

143⟩ When ¾ of a units digit is added to the tens digit of a two number, the sum of the digits becomes 10. If ¼ of the tens digit added to the units digit, then the sum of the digits is 1 less than the previous. Find the number.a) 94b) 84c) 48d) 88

144⟩ Wind flows 160 miles in 330min.for 80 miles how much time required?

145⟩ Suppose in a pot 20 cards are there label 1-20 on that. Find the probability of getting two prime?

146⟩ In some game 139 members have participated every time one fellow will get bye what is the number of matches to choose the champion to be held?

147⟩ What is the size of integer variable in JAVA?

148⟩ Find the Value and Express in DecimalIf A= 0 0 0 0 1 1 1 1B= 0 0 1 1 0 0 1 1C= 0 1 0 1 0 1 0 1Then find the value of [A U C] U B and express it in decimal

149⟩ If 5x*x+14*x+k=0 having two reciprocal roots find the value of k?

150⟩ Ten boxes are there. Each ball weighs 100 gms. One ball is weighing 90 gms.i) If there are 3 balls (n=3) in each box, how many times will it take to find 90 gms ball?ii) with n=10iii) with n=9

151⟩ If a company produces 15 different model of TV sets, 2 inchs screen and 4 different model of 4 inch screen size then how many model should vendor has for all the model?

152⟩ 2 trees are there, One grows at 3/5 of the other. In 4 years total growth of the trees is 8 ft. What growth will smaller tree have in 2 years?

153⟩ Sum of three consecutive nos isA)10B)22C)25D)30E)40

154⟩ Age of a person increased by 10% from last year. What is the current ratio from last year.a.110b.1110c.1112Which one is correct?

155⟩ All persons know either swimming or rowing. There are 14 persons who know only swimming and 14 persons who know only rowing. 8 tickets sold for rowing. How many people are there for swimming?

156⟩ A goat is tied to one corner of a square plot of side 12m by a rope 7m long. Find the area it can graze?

157⟩ The storage space required is given by the function P(N) = 4000 √N, where N is the number of boxes used. Find the percentage change in storage if the number of boxes is increased by 1%.(a) 0.75%(b) 0.25%(c) 0.5%(d) 1%(e) 2%

158⟩ Tanyas grandfather was 8 times older to her 16 years ago. He would be three times of her age 8 years from now. Eight years ago what was ratio of Tanyas age to her grandfather?

159⟩ If the area of a square has increased by 60%, by what percentage has its side increased?

160⟩ Peter and Paul were friends. After six years Paul will be twice as old as Peter was when peter was as old as Paul. If sum of their ages is 36 find the age of Peter?

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149⟩ If 5xx+14x+k=0 having two reciprocal roots find the value of k?