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Subject - Mathematics:

Number System

MCQ - 428-9160

Question:

Which of the following is a pair of co - primes?

  1. (14,35)
  2. (18,25)
  3. (31,93)
  4. (18,25)

Correct Answer: B

Explanation:

Co - prime numbers are the numbers which have only one common divisor = 1 or their HCF = 1.
Here for option
(A) 14 = 2 × 7
35 = 5 × 7∴HCF(14,25) = 7.
(B)18 = 2 × 3 × 3
25 =5 × 5∴ HCF(18,25) = 1.
(C) 31 = 1 × 31
93 = 3 × 31∴ HCF(31,93) = 31.
(D) 32 = 2 × 2 × 2 × 2 × 2
62 = 2 × 31∴ HCF(32,62) = 2.

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504 MCQ for effective preparation of the test of Number System of Mathematics section.

Read the MCQ statement: Which of the following is a pair of co - primes? , keenly and apply the method you have learn through the video lessons for Number System to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 428-9160.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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