21⟩ If A covers 15 miles in 20 minutes and 20 miles in 30 minutes then find the average speed of A?
average speed=total distance/total time
so answer is 20+15(total dist)/(1/3+1/2)total time in hrs=
35*(6/5)=42miles/hr
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59 Analytical Questions And Answers
22⟩ Two lemons cost 10 cents. Then one and a half dozen cost90 cents
Ans :
2L=1O => 1L=5
THEN,1 1/2 DOZEN=18L
SO,18L=18*5=90CENTS
23⟩ Three members went to a shop and took 3 kerchiefs each costs 10 rs so total price is rs 30 after they went off the owner of the sop realizes that he know the 3 members so he gives the worker 5rs and tells to return them back he gives them rs5 then they gives 2rs tip to him and remaining 3rs they share re1 each so that each gave rs9 to shopkeeper 9*3=27+2rs tip=29 where is the remaining 1rupee?
Each person has contributed 9 Rupees which includes the tips.
9*3 = 25 to shopkeeper + 2 for tips. So question itself is not correct
24⟩ Last month of an year(a) January (b) February (c) December (d) November
last month of year is December
25⟩ What is the minimum number of loaves of bread required to identify a single slow eating rat among a pack of 12 rats, given that the other rats are trained to eat at the same rate and the bread loaves to be used are identical
SIX
26⟩ Find the next number in the series. 1, 0.5, 0.25, 0.1250.0625
correct answer is 0.0625
because when 1 divide by 2 then we get 0.5 and further divide by 2 then we
get 0.25 and so on
27⟩ Which of the following figures together will make a triangle?a, b, c, d
b,d
28⟩ A clock is late by 1 minute 27 seconds in a month. Then how much will it be late in 1 day?2.9 seconds
1min=60sec, so 1min 27 secs is=60+27=87
then 1 month=30days
now, 30days=87secs late
1day = ? x
x = (87*1)/30=2.9 secs
Ans: 2.9 secs per day it will be late.
29⟩ Find min value of function |-5-x| + |2-x|+|6-x|+10-x|; where x is an integer?
19
since sum of absolute deviation taken about median is minimum ie median of -5,2,6,10 is 4. Putting x=4 in the fn, ull get 19 as the ans
30⟩ Y catches 5 times more fishes than X. If total number of fishes caught by X and Y is 42, then number of fishes caught by X?7
let no. of fish x catches=p
no. caught by y =r
r=5p.
r+p=42
then p=7,r=35
7 fish caught by x
31⟩ Select the least from the following.(a) 0.99 (b) 1 (c) 81 (d) 0.333
ans: 0.33 Decresing order(81,1,0.99,0.33)
32⟩ A is 6 times as fast as B and takes 100 days less to complete a work than B. Find the total number of days taken by A and B to complete the work?
A completed work in 100 days before and A is 6 times faster than B..
let total days to work is n.
A=6B;
A=(n-100) days taken to complete the work;
where as B=n days ;
A=(B-100)
therefore B=A+100;
A=6(A+100);
A=6A+600;
-600=6A-A
-600=5A
A=-600/5
A=300
B=400;
33⟩ Next number in the series 1, 1/2, 1/4, 1/8?1/16
The next number is 1/16.
Becoz The diff b'ween 1/2 and 1/4 is "+2"
and next 1/4 and 1/8 is "+4"
means 1 1/2 (+2) 1/4 (+4) 1/8 (+8) 1/16
34⟩ A man is going to a wedding party. He travels for 2hrs when he gets a puncture. Changing lyres takes 10mins. The rest of the journey he travels at 30 miles/hr. He reaches 30mins behind schedule. He thinks to himself that if the puncture had occurred 30miles later, he would have been only 15mins late. Find the total distance traveled by the man?
112.5 miles
35⟩ Select the odd one out.(a) 1/4 (b) 1/3 (c) 1/6 (d) 1/18
ans: 1/18 (bcoz it comes 0.062 remain vll come 0.25,0.33,0.16)
36⟩ If a train covers 600m in 0.5 seconds, how long it will cover in 10 seconds?
answer is =(600*1/2)*10=3000
who wrote dis
does he ever went to school or should i come 2 teach him
speed = distance/time that's the formula
it's not distance = distance * time (u fool)
37⟩ There are 20 balls red,blue or green.If 7 are green and sum of red and blue balls are less than 13.At most how many red balls are thereA. 4B. 5C. 6D. 7
C. 6
38⟩ How can a cake be cut into 3 pieces in 2 steps with a knife?
Are you referring to the Cake Cutting problem with 3 people and 2 cuts?
The problem is one of Even-Fairness, how do you divide a cake among 3 people so that each person gets an even amount with only 2 cuts.
The problem is solved via 1 Referee, and 4 Knives.
The Referee holds his Knife and slowly, going from left to right across the cake, draws it to a position for the 1st cut.
The 3 people each have a Knife as well, and position their knife in a position that they think will half the portion of the cake to the right of the Referee's knife.
The first person to call cut, receives that portion of the cake to the left of the Referee's knife, and is removed from the group.
Of the remain 2 people, the person who's knife is farthest to the right of the Referee's knife cuts the remaining portion of the cake and receives the cut portion to the right of their cut. The other person receives the portion to the left of the cut.
39⟩ The average temperature of Monday to Wednesday was 37C and of Tuesday to Thursday was 34C. If the temperature on Thursday was 4/5th of that of Monday, the temperature on Thursday was?
37 - 3 = 34
( (mon + tue + wed) / 3 ) - 3 = (tue+wed+thu)/3
( mon + tue + wed -9) / 3 = (tue + wed+ thu) /3
( mon + tue + wed - 9) = (tue + wed + thu )
mon - 9 = thu
(since thu = (4/5) mon )
(5 * thu)/4 - 9 = Thu
Thu = 36
40⟩ Consider there are 10 soldiers on the one side of the river. They need to go to the over side of the river. There is no bridge in the river and no one can swim in the river. One of the soldiers spots the boat with two boys inside. The boat is very small and the boys in the boats also very small. The boat can either hold two boys or one soldier. Now tell me how can all soldiers go to the other side of the river using this boat?
Both boys cross; one returns; the first soldier crosses; the second boy returns; both boys cross; one returns; the second soldier crosses; the second boy returns; both boys cross; one returns; the third soldier crosses n so on :-)
