- A7 and 9
- B11 and 13
- C13 and 17
- D19 and 23
Step-by-Step Solution
11 and 13 are both prime and differ by 2, so they are twin primes. In the other pairs at least one number is composite or the difference is not 2.
Answer: B) 11 and 13
Twin primes are pairs of primes that differ by 2 (like 3 and 5). Which pair below is a pair of twin primes?
Class 6Prime and Composite NumbersPlaying with Numbers
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Prime and Composite Numbers practice questions
More Class 6 Prime and Composite Numbers practice
Co-prime numbers are two numbers that have only 1 as a common factor. Which pair is…Meera has four raffle tickets numbered 91, 87, 89 and 93. Exactly one ticket number is…What is the largest prime number less than 50?How many prime numbers are there between 1 and 50?Which of the following pairs are both prime numbers?