Question

using divisibility tests se determine whether the following numbers are divisible by 3

Answer 1

hi friend,

Answer a) No, it is not divisible by 3.

Answer b) Yes, it is divisible by 3

Answer c) Yes, it is divisible by 3

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Answer 2

DIVISIBILITY TEST FOR 3 IS ---- THE SUM OF THE DIGITS IN THE GIVEN NUMBER SHOULD BE DIVISIBLE BY 3


A)125816=1+2+5+8+1+6=23 AND 23 IS NOT DIVISIBLE BY 3.
SO,125816 IS NOT DIVISIBLE BY 3


B)21150=2+1+1+5+0=9 AND 9 IS DIVISIBLE BY 3.
THEREFORE, THE GIVEN NUMBER IS DIVISIBLE BY 3 (7050*3=21150)


C)34560=3+4+5+6+0=18 AND 28 IS DIVISIBLE BY 3.
THEREFORE THE GIVEN NUMBER IS DIVISIBLE BY 3 (11520*3=34560)