Question

Find the missing number.

$(2,3),(5,7),(11,13),(17,19),\_\_\_\_$.

• A. $(26,28)$
• B. $(22,24)$
• C. $(23,25)$
• D. $(23,29)$

Answer 1

Answer: (D)

$(23,29)$

Given pattern is $(2,3),(5,7),(11,13),(17,19),\_\_\_\_$

In each pair, we can see that the number is divisible by $1$ or the number itself, clearly they are prime numbers.

So, $23$ and $29$ are primes numbers which are consecutive.

Hence, the answer is $(23,29)$.

Option D is correct.