Question

Find the largest number which completely divides 420 630 840

Answer 1

Answer:

210

Step-by-step explanation:

H.C.F. OF 420, 630, 840

$420 = 2 \times 2 \times 3 \times 5 \times 7$

$630 = 2 \times 3 \times 3 \times 5 \times 7$

$840 = 2 \times 2 \times 2 \times 3 \times 5 \times 7$

$h.c.f. = 2 \times 3 \times 5 \times 7$

$= 210$

210 is the largest digit which completely divides 420, 630, 840

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