All Free Mathematics MCQs with Answers
Every Mathematics question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
1,551 questions · page 73 of 78
- A. 343
- B. 121
- C. 1331
- D. 2197Downloading Digital Educational Resources
Explanation: 343 = 7 x 7 x 7, 1331 = 11 x 11 x 11, and 2197 = 13 x 13 x 13, so these are perfect cubes.
Correct answer: 121- A. 41
- B. 43
- C. 53
- D. 57
Explanation: 41, 43, and 53 are prime numbers because each has no divisor other than 1 and itself. 57 is composite because 57 = 3 x 19.
Correct answer: 57- A. 27
- B. 37
- C. 47
- D. 67
Explanation: 37, 47, and 67 are prime numbers, while 27 is composite because 27 = 3 x 9.
Correct answer: 27- A. 3
- B. 4
- C. 5
- D. 9
Explanation: 3, 5, and 9 are odd numbers, but 4 is even because it is divisible by 2. Therefore, 4 does not follow the common odd-number property.
Correct answer: 4- A. 2^-1
- B. 2^
- C. 2^+1
- D. n2
Explanation: Correct Answer "2^n -1"Solution:Sum of even bionomial coefficients=2^-1Hence Answer is "(A)"
Correct answer: 2^-1- A. 6th term
- B. 4th term
- C. 5th term
- D. 3rd term
Explanation: Correct Answer "6th Term"Solution:Hence Answer is "(A)"
Correct answer: 6th term- A. n ∈ O
- B. n ∈ N
- C. n ∈ E
- D. n ∈ W
Explanation: Correct Answer "n element of W"Solution :Hence Answer is "(D)"
Correct answer: n ∈ W- A. 3
- B. 5
- C. 2
- D. 4
Explanation: Correct Answer "4"Solution:n+1/2 =7+1/2=4Hence Answer is "(D)"
Correct answer: 4- A. 2
- B. 52
- C. 24
- D. 55
Explanation: Correct Answer "5^5"Solution:sum of coefficients=(3+2)2=5
Correct answer: 55- A. -5687/8x5
- B. 5687/8x5
- C. -15309/8x5
- D. 15309/8x5
Explanation: Correct Answer "15309/8x5 "Solution:Hence Answer is "(C)"
Correct answer: -15309/8x5- A. 198/x2
- B. -198/x2
- C. 188/x2
- D. -188/x2
Explanation: Correct Answer" -198/x2"Solution:Hence Answer is "(B)"
Correct answer: -198/x2- A. 16.64
- B. 16.44
- C. 16.40
- D. 16.60
Explanation: Correct Answer "16.64"Solution :Hence Answer is "(A)"
Correct answer: 16.64- A. n = 3
- B. n = 4
- C. n = 5
- D. n = 6
Explanation: Correct Answer "n = 3"Solution :Hence Answer is "(A)"
Correct answer: n = 31454. Binomial expansion of an expression A is given by 1-8x+24x²-32x² + 16x4 the expression A is given by
- A. A = (1-2x)4
- B. A = (1-4x)
- C. A = (1+2x)4
- D. A = (1-4x)4
Explanation: Correct Answer A = (1-2x)4Solution :Hence Answer is "(A)"
Correct answer: A = (1-2x)4- A. 5
- B. 10
- C. 25
- D. 4
Explanation: Correct Answer "10"Solution :Hence Answer is "(B)"
Correct answer: 10- A. 5689a4
- B. 4032 a2 / X5
- C. 895 a4 / 86 / X5
- D. 682 a4 / 9 X3
Explanation: Correct Answer 4032 a2 / X5 Solution :Hence Answer is "(B)"
Correct answer: 4032 a2 / X5- A. n + 1
- B. n - 1
- C. n
- D. n - 2
Explanation: Correct Answer "n"Solution :No of terms = index + 1 = n - 1 + 1 = nHence Answer is "(C)"
Correct answer: n- A. X3 / 256Y8 + X6 / y6
- B. X3 / 256 y8
- C. X8 / y8 - X5 / 8y6
- D. X3 / 256y3 - X6 / 8y6
Explanation: Correct Answer X3 / 256y3 - X6 / 8y6Solution :Hence Answer is "(D)"
Correct answer: X3 / 256y3 - X6 / 8y6- A. C1
- B. 5/12
- C. C. 1
- D. None of these
Explanation: Correct Answer "None of these"Solution:Hence Answer is "(D)"
Correct answer: None of these- A. 84
- B. 8,4
- C. 0.84
- D. None of these
Explanation: Correct Answer "None of these"Solution :Hence Answer is "(D)"
Correct answer: None of these