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Q: Which of the following numbers is NOT divisible by 9 ?
  • A. 49104
  • B. 77832
  • C. 35253
  • D. 45390
Correct Answer: Option D - Divisibility rule of 9 : A number whose sum of its digit is exactly divisible by 9 then the number is always divisible by 9. from options - (a) 49104 → 4 + 9 + 1 + 0 + 4 = 18, divisible by 9. (b) 77832 → 7 + 7 + 8 + 3 + 2 = 27, divisible by 9. (c) 35253 → 3 + 5 + 2 + 5 + 3 = 18, divisible by 9. (d) 45390 → 4 + 5 + 3 + 9 + 0 = 21, not divisible by 9.
D. Divisibility rule of 9 : A number whose sum of its digit is exactly divisible by 9 then the number is always divisible by 9. from options - (a) 49104 → 4 + 9 + 1 + 0 + 4 = 18, divisible by 9. (b) 77832 → 7 + 7 + 8 + 3 + 2 = 27, divisible by 9. (c) 35253 → 3 + 5 + 2 + 5 + 3 = 18, divisible by 9. (d) 45390 → 4 + 5 + 3 + 9 + 0 = 21, not divisible by 9.

Explanations:

Divisibility rule of 9 : A number whose sum of its digit is exactly divisible by 9 then the number is always divisible by 9. from options - (a) 49104 → 4 + 9 + 1 + 0 + 4 = 18, divisible by 9. (b) 77832 → 7 + 7 + 8 + 3 + 2 = 27, divisible by 9. (c) 35253 → 3 + 5 + 2 + 5 + 3 = 18, divisible by 9. (d) 45390 → 4 + 5 + 3 + 9 + 0 = 21, not divisible by 9.