C

Chandani • 10.97K Points
Tutor II Reasoning

Q. If you write down all the numbers from 1 to 100, then how many times do you write 3 ?

  • (A) 11
  • (B) 18
  • (C) 20
  • (D) 21
  • Correct Answer - Option(C)
  • Views: 533
  • Filed under category Reasoning
Explanation by: Chandani
Clearly, from 1 to 100, there are ten numbers with 3 as the unit's digit- 3, 13, 23, 33, 43, 53, 63, 73, 83, 93; and ten numbers with 3 as the ten's digit - 30, 31, 32, 33, 34, 35, 36, 37, 38, 39.

So, required number = 10 + 10 = 20.

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