10 Important Math MCQs for most of the competitive exams
Que 1: By what least number, 675 be multiplied to obtain a number which is perfect cube?
(A) 5
(B) 6
(C) 7
(D) 8
Correct Ans: A
Que 2: The largest 4 digit number which is a perfect cube is
(A) 9999
(B) 9261
(C) 8000
(D) None of these
Correct Ans: B
Que 3: The value of ³√3375 is
(A) 1.5
(B) 0.15
(C) 1.52
(D) 1.2
Correct Ans: A
Que 4: The cube root of 1.728 is
(A) 2.4
(B) 1.5
(C) 1.2
(D) 2.5
Correct Ans: C
Que 5: If average of given numbers 3, 5, 6, 7, 9, x is 7, then find the value of x
(A) 12
(B) 5
(C) 8
(D) 19
Correct Ans: A
Que 6: The average of marks secured by 35 students is 72. If the marks secured by one student was written as 36 instead of 86, then find the correct average?
(A) 74
(B) 73.4
(C) 75.6
(D) 71.8
Correct Ans: B
Que 7: The average weight of 8 persons increased by 1.5 kg when a person weighing 65 kg is replaced by a new person, what could be the weight of new person?
(A) 69 kg
(B) 79 kg
(C) 77 kg
(D) 78 kg
Correct Ans: C
Que 8: The sum of all integers between 200 and 400 divisible by 9 is
(A) 3366
(B) 6633
(C) 6336
(D) 6363
Correct Ans: B
Que 9: Find the number of divisors of 1420.
(A) 14
(B) 15
(C) 13
(D) 12
Correct Ans: D
Que 10: The least five digit number which is divisible by 666 is
(A) 10010
(B) 16056
(C) 10665
(D) 10656
Correct Ans: D
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