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(1)If 20% of a = b, then b% of 20 is the same as:
A.4% of a
B.5% of a
C.20% of a
D.None of these
Answer:-A
solution:-20a/100=b
b% of 20=20b/100
now put value of b in 20b/100
we will get 20a/100*20/100
4a/100=4% of a

(2)A man invested Rs. 1552 in a stock at 97 to obtain an income of Rs. 128. The dividend from the stock is:
A.7.5%
B.8%
C.9.7%
D.None of these
Answer:-B
solution:-128*97/1552=8%

(3)? : BGLQ : : YDIN : VAFK
A.EKNS
B.DKMT
C.DLMS
D.EJOT
Answer:-D

(4)If "football" is "cricket" ,"cricket" is "BASKETBALL" ,"basketball" is "volleyball","volleyball" is "khokho" and "khokho" is cricket, which is not a ball game?
A.cricket
B.football
C.khokho
D.basketball
Answer:-A

(5)The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?
A.4
B.8
C.16
D.None of these
Answer:-B
Solution:-digits be 2x and x respectively
(10 x 2x + x) - (10x + 2x) = 36
9x=36 and x=4
(2x + x) - (2x - x) = 2x = 8.

(6)The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
A.3500
B.4000
C.4050
D.5000
Answer:-B
Solution:-2(P + Q + R) = 33000
P + Q + R = 16500
and Q+R=6250*2
s0 p=16500-12500=4000

(7)A man took loan from a bank at the rate of 12% p.a. simple interest. After 3 years he had to pay Rs. 5400 interest only for the period. The principal amount borrowed by him was:
A.2000
B.10000
C.15000
D.20000
Answer:-C
solution:-100*5400/12*3

(8)10, 25, 45, 54, 60, 75, 80
A.10
B.45
C.54
D.75
Answer:-C
Solution:-Each of this is multiple of 5 except 54

(9)36, 54, 18, 27, 9, 18.5, 4.5
A.4.5
B.18.5
C.54
D.18
Answer:-B
Solution:-alternatively multiplied by 1.5 and divided by 3

(10)Ayesha's father was 38 years of age when she was born while her mother was 36 years old when her brother FOUR years younger to her was born. What is the difference between the ages of her parents?
A.2 years
B.4 years
C.6 years
D.8 years
Answer:-C
SOlution:-Mothers age when Ayesha's brother was born = 36 years.
Father's age when Ayesha's brother was born = (38 + 4) years = 42 years.
Required difference = (42 - 36) years = 6 years.

Some basic Number Average APTITUDE Questions with Answer Part1
Below are the some GOOD Number Average Aptitude Questions with answers
(1)Average Aptitude Questions
(a)What is the average of first five MULTIPLES of 35?
(i)70
(ii)105
(iii)140
(iv)100

(b)If average of THREE consecutive even numbers is 34 so find

the largest of these numbers
(i)40
(ii)32
(iii)34
(iv)36

(c)If average group of 30 boys is 16 years and one boy with

age 19 leaves the group and a new one joined and average is

15.8 years now. Find the age of new boy.
(i)12 years
(ii)13 years
(iii)14 years
(iv)15 years

(d)What is the average of first five natural numbers?
(i)5
(ii)2
(iii)3
(iv)4

(E)If the average of 20 numbers is zero, how many numbers may be greater than zero?
(i)19
(ii)49
(iii)17
(iv)33


Answer:-
1(a)
Average=35*(1+2+3+4+5)*1/5
Average=35*15*1/5
Average=35*3=105

1(b)
Let First number is x so next two number are x+2,x+4
so total is =(x+x+2+x+4)/3=34
(3x+6)/3=34
3x+6=102
3x=96
x=32
so largest number is 32+4=36


1(c)
Let age of new boy is x years
Total age of 30 boys =30*16=480 years
Now average with new age=(30*16-19+x)/30=15.8
480-19+x=474
x=474-480+19=-6+19
x=13 years


1(d)
average=sum of items/number of items
average=1+2+3+4+5=15/5=3


1(e)
Let avarage of 20 number is 0
and sum of 20 number=(0*20)=0
so it is quite possible that 19 of these numbers may be positive and if sum is "x" then 20th number will be (-x) so answer is (i)19

Below are some Aptitude number QUESTIONS
(1) Which below number is not a prime number?
(a)31
(b)13
(c)71
(d)91
Answer:- (d) because 91 is divisible by 7

(2)Find largest number of 4 digit divisble by 88 from below given number
(a)9888
(b)9944
(c)8888
(d)9768
Answer:-to GET answer we will divide largest 4 digit number 9999 by 88 and we will get reminder 55 and subtract this number from 9999 and will get the answer
9999-55=9944

(3) Find the value (635235 x 625) = ?
(a)397021875
(b)397042875
(c)497021875
(d)345001875
Answer: to get answer we need to SPLIT the short item 625 in easy way like
625=5 raise to power 4 and this should be 10/2 raise to power 4 so we will get 635235*10*10*10*10 means 6352350000/16 we get the =397021875

(4)value of 1397*1397
(a)1951609
(b)1981709
(c)18362619
(d)2031719
Answer:- (1397)^2=(1400-3)^2=(1400)^2+3^2-2*1400*3=1960000+9-8400=1951609