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Multiple choice

The HCF of two numbers 2040 and 391 is:

  1. 17

  2. 21

  3. 16

  4. 18

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Finding HCF of 2040 and 391. 391 = 17 × 23 (since 391/17 = 23). Checking if 17 divides 2040: 2040/17 = 120, which is an integer. Checking if 23 divides 2040: 2040/23 = 88.7, not an integer. Therefore HCF = 17.

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