I think it is b that is the answer
The sum of three even consecutive integers if the first integer is y will be 3y + 6.
First integer = y
Second integer = y + 2
Third integer = y + 4
Therefore, based on the expressions given above, the sum of the three integers will be:
= y + y +2 + y + 4
= 3y + 6
Therefore, the sum will be 3y + 6.
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Since n>2 n
n can be 3 for example
so a3=t
and from the sequence we know a3 = 15
because it is the product of a1(3) and a2( 5)
so t = 15