Skip to content / Đến nội dung
ThichHocToan.com

SASMO 2020 Grade 10 Question 5

SASMO · SASMO 2020 Grade 10

Question 5

A “Nicely Seven” is a two-digit positive integer with exactly two positive factors, whose factors have a sum divisible by 7. How many Nicely Seven numbers are there?
  1. 8
  2. 13
  3. 3
  4. 4
  5. None of the above