Question

2,4,6 are the first three consecutive even numbers then 12th even numbers is

Answer 1

The sequence of even numbers is,

2,4,6,......, 2n

Hence, they are in A.P.

Now,

t(n) = a+(n-1)d

t(12) = 2+(12-1)2

t(12) = 2+11(2) = 2+22 = 24.

Hence the 12th number is 24.