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riadik2000 [5.3K]
3 years ago
8

WHAT IS THE HCF OF 21 28 42

Mathematics
1 answer:
gulaghasi [49]3 years ago
8 0

Answer:

7.

Step-by-step explanation:

21 = 3 * 7

28 = 2 * 2 * 7

42 = 2 * 3 * 7

Collecting common factors:

t is common to all 3 sets of factors so

HCF = 7.

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