- A4
- B1
- C2
- D3
Step-by-Step Solution
leaves remainder 1, leaves 5, leaves 1, leaves 5. So remainder 1 occurs for 7 and 13 — that is 2 primes.
Answer: C) 2
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Prime and Composite Numbers practice questions