21⟩ If G(0) = -1 G(1)= 1 and G(N)=G(N-1) - G(N-2) then what is the value of G(6)?
ans: -1
bcoz g(2)=g(1)-g(0)=1+1=2
g(3)=1
g(4)=-1
g(5)=-2
g(6)=-1
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332 Aptitude Questions And Answers
22⟩ There are 5 distinct pairs of white socks and 5 pairs of black socks in a cupboard. In the dark, how many socks do I have to pull out to ensure that I have at least 1 correct pair of white socks?a) 3b) 11c) 12d) 16
it need to be 11.cos thr s totally 20 such socks,10 in each color so if we take 11 thr shud be atleat 1pair of same color
23⟩ Find the range of x*x -5x+6>0 if X<=2; X >=3?
The range of x lies between x>3 as well as x>2 w.r to ques. its in existing range
24⟩ If log 0.317=0.3332 and log 0.318=0.3364 then find log 0.319?
log 0.317=0.3332 and log 0.318=0.3364
then
log 0.319=log0.318+(log0.318-log0.317)
0.3396
25⟩ Tell me how do you think you are confident?
i think i am confident in any of my works as they are right bcoz i do any work with full of concentration,intrest,and i will put all my frantic efforts to complete that work effectively to make that work "the best" among all among others.
26⟩ In the word ORGANISATION if we exchange first with the second, second with the third, third with fourth and so on. Till last then what will be the 10 letter from right?
RGANISATIONO
So 10th letter is 'A'
27⟩ A traveler walks a certain distance. Had he gone half a kilometer an hour faster, he would have walked it in 4/5 of the time, and had he gone half a Kilometer an hour slower, he would have walked 2 ½ hr longer. What is the distance?a) 10 Kmb) 15 Kmc) 20 Kmd) Data Insufficient
since the distance travelled is same
st=(s+0.5)(4/5)t
on solvin u will get s=2
there is one more equation
st=(s-0.5)(t+5/2)
substitute s=2 in the above eq and find 't' u will get s=2,t=7.5 therefore d=st=15km
ans:15km
28⟩ A bus started from bus stand 8.00am and after 30min staying at destination it returned back to the bus stand. The destination is 27 miles from the bus stand the speed of the bus 50percent fast speed at what time it returns to the bus stand?
assuming bus speed at 27miles / hr
Bus will reach destination at 9.00 am
and will start return journey at 9.30 am
To cover other 27miles at 50% slower speed i.e at 18miles /hr it will take 1hr 30 minutes and will reach at start point at 11am.
29⟩ In madras,temperature at noon varies according to -t^2/2 + 8t+3, where t is elapsed time.Find how much temperature more or less in 4pm to 9pm?
here temp is direstly proportional to -t^2/2+8t+3
so at 4pm -4^2/2+4*8+3 is 27
at 9 pm -9^2/2+9*8+3 is 70.5
so diff is 34.5
30⟩ A car is filled with four and half gallons of oil for full round trip. Fuel is taken 1/4 gallons more in going than coming. What is the fuel consumed in coming up?
comming up takes 2 3/8 going down 2 1/8
31⟩ A ship started from a port and moving with I mph and another ship started from L and moving with H mph. At which place these two ships meet?
if they meet at t time.dist. travelled by first one I*tdist. travelled by second one H*ttotal distance is t*(I+H)=Lso t= L/(I+H)meeting point is I*t = I*L/(I+H) dist. from port
32⟩ In a mixture R is 2 parts, S is 1 part in order to make S to 25% of the mixture, how much R is to be added?
R shall be 50% of volume asuumed for
which S is taken 25% of that same volume
33⟩ A person who decided to go weekend trip should not exceed 8 hours driving in a day average speed of forward journey is 40 mph due to traffic in Sundays the return journey average speed is 30 mph. How far he can select a picnic spot?
let x mile be the distance of picinic spot.onward jrny =x/40 hrreturn jrny = x/30 hrtotal x(1/40+1/30)=8 hr so x=137.14 mile
34⟩ Find the value of 678 to base 7...if possible give me steps and how to solve?
divide 678 by 7 we ll get 6 as remainder.... again divide d quotient by 7 we get 5 as remainder... again divide quotient getting 6 as remainder...again doing 1 as remainder.... just reverse the order of remainders we got........ we ll get 1656..
35⟩ Bhanu spends 30% of his income on petrol on scooter. ¼ of the remaining on house rent and the balance on food. If he spends Rs.300 on petrol then what is the expenditure on house rent?Choices a) Rs.525b) Rs.1000c) Rs.675d) Rs.175
Let the salary be x
then 30*x/100 = 300
hence x = 1000
remaining sal 1000-300 = 700
& 1/4 of 700 = 175
so ans= 175
36⟩ A report consists of 20 sheets each of 55 lines and each such line consists of 65 characters. This report is retyped into sheets each of 65 lines such that each line consists of 70 characters. The % reduction in the number of sheets is closest toa) 20b) 5c) 30d) 35
20% is d ans
20*55*65 = 71500 chars
Let the number of sheets required be x here.
Hence, x*65*70 = 71500 chars
or x = 71500/65*70 = 15.71 = 16 sheets(approx)
hence % reduction in sheets = 20%
37⟩ The size of a program is N. And the memory occupied by the program is given by M = square root of 100N. If the size of the program is increased by 1% then how much memory now occupied?
M=sqrt(100N)
N is increased by 1%
therefore new value of N=N + (N/100)
=101N/100
M=sqrt(100 * (101N/100) )
Hence ,we get
M=sqrt(101 * N)
38⟩ What is the highest prime number that can be storedin a 8-bit microprocessor?
for an 8-bit memory address memory address : 128 64 32 16 8 4 2 1 1 1 1 1 1 1 1 1 = 253but this can be divided by 11,the next greatest prime number is 1 1 1 1 1 1 0 1 == 251:
39⟩ Given $ means Tripling and % means change of sign then find the value of $%$6-%$%6?
The answer is -9*6 - 4*6 = -78
$%$6 = (3)(-1)(3)*6 = -9*6
%$%6 = (-1)(3)(-1)*6 = 3*6
40⟩ x, y, and z are odd number not necessarily in sequence then y=?Mean of x and z is 114 and mean of y and z is 113?
here; (X+Z)/2=114;
(Y+Z)/2=113; from these 2 eq. we have X-Y=2;
therefore suppose that X=2n-1 any odd no. where n=1,2,3.........
y=2n-3 we have to choose Z such that n should be real no.
suppose z=2n-7; therefore (X+Z)/2=114; (2n-1 + 2n-7)/2=114; solving this we get n=59; Y= 115
