Question

Using divisibility tests, determine whether 639210 is divisible by 3.
SECTION – C ( 3 marks each ) Q-17 Find the HCF of 30 and 42.​

Answer 1

Answer:

21 is divisible by 3.

HCF of 30 = 2×3×5.

42=2×3×7.

Answer 2

$question$

Using divisibility tests, determine whether 639210 is divisible by 3

$answer$

For number 639210, sum of digits = 6 + 3 + 9 + 2 + 1 + 0 = 21 which is multiple of 3. Therefore, 639210 is divisible by 3.

$q - 17$

Find the HCF of 30 and 42.

$answer$

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