Question

And one of the number a, a +2 and a+4 is the muntiple of :

Answer 1

Hello friends .

( a+2 ) ( a+4 )

= a×a +( 2 +4 ) a+ 2×4

a^ 2 + 6a +8

OR

a , a + 2 , a + 4

a , ( 3 + a ) - 1 , ( 3 + a ) + 1

So Let , a be ___ 3m ( Euclid's )

3m + 1 Division )

3 m + 2 ( Lemma )

If , a is 3 m , Then divisible by 3

If , a is 3 m + 1 , Then , a + 2

3 m + 3 = 3 ( m + 1 )

It is divisible by 3

If a , is 3 m + 1 , Then , a + 4

= 3 m + 6 = 3 ( m + 2 )

Divisible by 3

a , a + 2 , a + 4 is such that at least one of them is divisible by 3 .

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