1.

Find HCF of 15, 30 and 45?1. 152. 53. 304. 9

Answer» Correct Answer - Option 1 : 15

Concept used:

HCF can be found by prime factorization method

Calculation:

15 = 3 × 5

30 = 2 × 3 × 5

45 = 3 × 3 × 5

The common factor is 3 × 5 = 15

∴ The HCF of 15, 30 and 45 is 15



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