If you are preparing for Defence Exam, then here you can practice Math MCQ Questions with Answers which can improve in your preparation.
Question 1: A wheel rotates 15 times each minute. How many degrees will it rotate in 12 seconds of time?
(A) 360°
(B) 720°
(C) 1080°
(D) None of the above
Question 2: If f(n) = n5 – n, n ϵ N, then f(n) is divisible by
(A) 25
(B) 30
(C) 35
(D) 32
Question 3: If “+” means “-“, “-“ means “x” means “/” and “/” means “+”, then 2 – 50 + 40 x 10 / 4 = ?
(A) 104
(B) 100
(C) 98
(D) 110
Question 4: In the below series, which number comes next? 1, 3, 7, 15, 31, 63, ?
(A) 120
(B) 126
(C) 127
(D) 94
Question 5: A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 26 seconds. What is the length of the goods train?
(A) 230 m
(B) 240 m
(C) 260 m
(D) 270 m
MCQ Questions with Answers
Question 6: The cost price of 20 articles is the same as the selling price of x articles. If the profit is 25%, then the value of x is
(A) 15
(B) 16
(C) 18
(D) 25
Question 7: By what least number, 432/625 be divided to get a perfect cube?
(A) 4/5
(B) 6/5
(C) 5/6
(D) 2/5
Question 8: The difference between two positive numbers is 3 and the sum of their squares is 369. Then the sum of the numbers is
(A) 33
(B) 20
(C) 81
(D) 27
Question 9: A reduction of 20% in the price of sugar enables a purchaser to obtain 3 kg more for Rs. 120. The original price of sugar per kg is
(A) Rs. 15
(B) Rs. 12
(C) Rs. 8
(D) Rs. 10
Question 10: The average of the first five multiples of 3 is
(A) 3
(B) 9
(C) 12
(D) 15
MCQ Questions with Answers
Question 11: A reduction in the price of apples enables a person to purchase 3 apples for Re. 1 instead of Rs. 1.25. The percent reduction in price is
(A) 20%
(B) 25%
(C) 30%
(D) 35%
Question 12: If a+b:b+c:c+a = 6:7:8 and a+b+c = 14, then value of ‘c’ is
(A) 6
(B) 7
(C) 8
(D) 14
Question 13: If two numbers are in the ratio of 5:8 and if 9 is added to each, the ratio becomes 8:11. Find the sum of the numbers.
(A) 39
(B) 49
(C) 64
(D) 19
Question 14: If √5 = 2.24 and √6 = 2.45, then the value of (√2/√3)+(√5/√6)=
(A) 1.37
(B) 1.57
(C) 1.73
(D) 1.75
Question 15: (16)0.16x(16)0.04x(2)0.2 is equal to
(A) 1
(B) 2
(C) 4
(D) 16
MCQ Questions with Answers
Question 16: If 257.5 x 52.5 / 1251.5 = 5x, then the value of ‘x’ is
(A) 16
(B) 17.5
(C) 8.5
(D) 13
Question 17: The value of [(1/5)/(1/5) of 1/5]/[(1/5) of (1/5) / (1/5)] is
(A) 1
(B) 25
(C) 1/25
(D) 125
Question 18: A fraction is such that if the numerator is multiplied by 3 and denominator is reduced by 3, we get 18/11, but if the numerator is increased by 8 and the denominator is doubled, we get 2/5. Then the fraction is
(A) 8/15
(B) 12/25
(C) 11/21
(D) 9/28
Question 19: If two numbers are in the ratio of 5:8 and 9 is added to each, the ratio becomes 8:11. Find the sum of the numbers.
(A) 39
(B) 49
(C) 64
(D) 19
Question 20: On selling a pen for Rs. 18, a man loses 1/10 of its cost price. The cost price of the pen is
(A) Rs. 16.20
(B) Rs. 19.80
(C) Rs. 20
(D) Rs. 25
MCQ Questions with Answers, MCQ Questions with Answers, MCQ Questions with Answers
MCQ Questions with Answers Mathematics – NDA, CDSE Answer Key: –
| Question No. | Answer | Question No. | Answer |
| Question 1 | C | Question 11 | A |
| Question 2 | B | Question 12 | A |
| Question 3 | B | Question 13 | A |
| Question 4 | C | Question 14 | C |
| Question 5 | D | Question 15 | B |
| Question 6 | B | Question 16 | D |
| Question 7 | D | Question 17 | A |
| Question 8 | D | Question 18 | B |
| Question 9 | D | Question 19 | A |
| Question 10 | B | Question 20 | C |
