Aptitude and Computer Awareness

No Negative Marking.45 minutes to complete the test. Do not write anything on
question paper.

QUANTITATIVE APTITUDE

Directions for question nos. 1-2: Eighty Five children went to amusement park
where they could ride on merry –go-round roller coaster and Ferris wheel .It was
known that 20 of them have took all three rides and 55 of them have taken at
least two of the three rides. Each ride cost Rs.1 and the total receipt of the
amusement park was Rs.145.

1) How many children did not try any of the rides. ?

A) 5 B) 10 C) 15 D) 20

Ans. 15.

20 kids * 3 rides = Rs. 60

(55-20=)35 kids * 2 rides = Rs. 70

60 + 70 = Rs. 130

So, Rs. (145 – 130 = ) 15 are left for the other (85 – 55 = ) 30 kids . so only
15 of them can take a ride and rest 15 will be left out.

145 rides were taken. 20 of them took all three, i.e. Rs. 60 were spent, so
145-60= Rs. 85 are left for the others. Total kids were 85, so rest were 65. out
of these 65,

2) How many children took exactly one ride?

A) 5 B) 10 C) 15 D) 20

Ans. 15

3) Four cities are connected by a road network as shown in the figure. In how
many ways can you start from any city and come back to it without travelling on
the same road more than once ?

A) 8

B) 12

C) 16

D) 20

Ans. 12.

Consider the top city, the following are the 3 routes possible, starting from
the leftmost edge. Since there are 3 edges emanating from each city and the
figure is perfectly symmetrical, these 3 routes are possible from each edge,
hence for any given city, the total number of routes = 4 * 3 = 12.

Directions for question nos 4-5:

A, B, and C are three numbers, Let

@(A, B)= Average of A and B

*(A, B)=Product of A and B

/(A, B)=A divided by B

4) If A=2 and B=4 the value of @( / (*(A,B),B),A) would be

A) 2

B) 4

C) 6

D) 16

Ans. 2

5) Sum of A and B is given by

A) *(@(A, B), 2)

B) /(@(A,B),2)

C) @(*(A,B),2)

D) @(/(A,B),2

Ans. A.

6) Let x<0, 0<y<1, Z>1 which of the following is false:

A) (x2-z2)has to be positive.

B) yz can be less than one.

C) xy can never be zero

D) (y2-z2) is always negative

Ans. A.

7) If A’s income is 25% less than B’s ,by what % is B’s income greater than that
of A ?

A) 35%

B) 25%

C) 30%

D) None of these

Ans. D.

Directions for question nos 8-12: A professor keeps data on students tabulated
by the sex and the performance of the student. Data is kept in a computer disk,
but unfortunately some of it is lost because of a virus. Only the following
could be recovered:

Performance Total

Average Good Excellent

Male 10

Female 32

Total 30

Panic buttons were pressed but to no avail. An expert committee was formed,which
decided that the following facts were self evident:

a) Half the students were either good or excellent.

b) 40% of the students were female

c) One third of male students were average

8) How many students were both female and excellent?

A) 0

B) 8

C) 16

D) 32

Ans. A

Performance Total

Average Good Excellent

Male 10 48

Female 32

Total 30 80

Panic buttons were pressed but to no avail. An expert committee was
formed,which decided that the following facts were self evident:

d) Half the students were either good or excellent. (implies the total of
good and excellent is 40, i.e., hall of 80)

e) 40% of the students were female (this implies that 32 is 40% of the total
students, hence total students are 80, this implies that males are 48,
calculate the rest yourself)

f) One third of male students were average

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