Missing      Number   Puzzle -4

Find the missing term in the series given below!

2, 4, 10, 26, 68, ?

SOLUTION!

2, 4, 10, 26, 68, ?

Solution:

Difference between any 2 terms is the sum of all previous terms.
So the unknown value will be equal to,
68 + (sum of all previous terms)
which is,
 68+(2+4+10+26+68)
=178!