Question 16

In the following question, select the odd number pairs from the given alternatives.

Solution

The number pairs 11 - 13, 31 - 37, 43 - 47 are pair of consecutive prime numbers.

In the number pair 61 - 69, 69 is not a prime number.

$$\therefore\ $$61 - 69 is the odd one among the given number pairs.

Hence, the correct answer is Option D

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