Join Examsbook
745 0

Q:

There are some friends, all less than 20 years. When paired amongst themselves they realize that the sum of their ages is a multiple of 5. If their ages are distinct prime numbers, then the number of possible pairs are: 

  • 1
    7
  • 2
    5
  • 3
    8
  • 4
    6
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "7"

Are you sure

  Report Error

Please Enter Message
Error Reported Successfully