A natural number lies between 100 and 400, and the sum of its digits is 10. The probability that is divisible by 4 is _________________
- A
- B
- C
- D
Reveal answer
Correct answer
B.
Reveal solution
Total numbers between 100-399 with digit-sum 10: → 10, → 9, → 8. Total = 27.
Of these, divisible by 4: 2 + 3 + 2 = 7. Probability = .