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How many two-digit numbers are divisible by 3? (a) 25 (b) 30 (c) 32 (d) 36

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Question

How many two-digit numbers are divisible by 3?

Options

  • 25

  • 30

  • 32

  • 36

MCQ
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Solution

30

Explanation:

Two-digit numbers divisible by 3 are 12, 15, 18, ..., 99.

Let Tn = 99.

Then, 12 + (n – 1) × 3 = 99

⇒ (n – 1) × 3 = 87

⇒ n = 30

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Chapter 5: Arithmetic Progression - MULTIPLE-CHOICE QUESTIONS (MCQ) [Page 297]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 5 Arithmetic Progression
MULTIPLE-CHOICE QUESTIONS (MCQ) | Q 16. | Page 297
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