CSEET Quantitative aptitude MCQs with workings part 1

1. What is the sum of 3/4 and 1/3?

a) 2/7

b) 3/7

c) 5/12

d) 13/12

Find the LCM of denominators 4 and 3 → LCM = 12

3/4 = 3X3/4X3 = 9/12

1/3=1X4/3X4  = 4/12

ADD NUMERATORS

9/12 +4/12 = 13/12

2. Which fraction is equivalent to 2/5?

a) 4/10

b) 3/7

c)

1/2

d) 6/10

multiply or divide both numerator and denominator by the same number other than 0

2/5 = 2/5 x 2/2 = 4/10

3. If you multiply 1/8 by 2, what is the result?

a) 1/4

b) 3/16

c) 6/16

d) 3/4

1/8 x 2 = 1x2 / 8x1  = 2/8

2/8 = 1/4

4. What is the reciprocal of 5/9?

a) 9/5

b) 5/9

c) 1/9

d) 9/1

To find the reciprocal of a fraction, you swap the numerator and the denominator. 5/9  = 9/5

5. Which fraction is smaller: 2/3 or 2/8?

a) 2/3

b) 2/8

c) They are equal.

d) It cannot be determined.

 common sense answer 2/8

mathmatically

make the denominators the same - LCM 3 and 8 =24

2/3 = 16/24

2/8 = 6/24

now compare = 6/24 is smaller so 2/8 smaller

6. What is the difference between 5/12 and 1/6?

a) 1/2

b) 1/3

c) 5/12

d) 1/4

Find the lcm of denominators 12 and 6 which is 12

so 1/6 will become 1x2/6x2 = 2/12

now subtract 5/12 - 2/12 = 3/12

simplify 3/12 - 1/4. so the difference is 1/4

7. Which of the following fractions is in its simplest form?

a) 4/10

b) 1/3

c) 5/15

d) 6/12

1/3 is already is simple and cannot be simplified further

8. If you multiply 2/5 by 3/4, what is the result?

a) 3/9

b) 3/10

c) 4/15

d) 3/5 2

2/5 x 3/4 = 2x3/5x4

= 6/20 = 3/10

9. If you have 3/4 of a pizza left, and you eat half of what's left, how much pizza have you eaten?

(A) 3/8

(B) 1/4

(C) 1/2

(D) 5/8

you had 3/4th of pizza and you ate half of that

= 1/2 of 3/4  = 3/8.. so you ate 3/8^th of the pizza

10. If a recipe calls for 1/4 cup of sugar, and you want to make half of the recipe, how much sugar

do you need?

(A) 1/2 cup

(B) 1/8 cup

(C) 1/4 cup

(D) 1/3 cup

 need 1/2 of 1/4 = 1/2x1/4  = 1/8

11. You have a rectangular piece of paper that's 8 inches long and 6 inches wide. What's the ratio

of the length to the width?

(A) 8:6

(B) 6:8

(C) 2:3

(D) 4:3

Length   8 inch

width     6 inch

so the ratio is 8:6 and can be 4 :3   ( divided by 2)

12. If you have a jar with 25% red marbles, 25% green marbles, 25% black marbles and 15 of them

are white, how many marbles do you have?

(A) 10

(B) 15

(C) 25

(D) 60

 Total marbles is 100% and red , green and black 25% each totalling to 75% so white is 25 and it is 15 nos.

If 1/4 th 15 then how much is 100%  15x4 = 60

13. If you multiply 0.4 by 5, what is the result?

(A) 0.04

(B) 0.4

(C) 2

(D) 4

answer is 2

14. If a recipe calls for 1/3 cup of flour, and you want to make one-third of the recipe, how much flour do you need?

(A) 1/9 cup

(B) 1/6 cup

(C) 1/3 cup

(D) 1/2 cup

1/3 rd of 1/3^rd  = 1/3x1/3  = 1/9