2
2 x 5 - 3 = 7
7 x 5 - 3 = 32
32 x 5 - 3 = 157
157 x 5 - 3 = 782
782 x 5 - 3 = 3907
What will come in place of the x in the following Number series? 2, 7, 32, 157, 782, x
a. 3707
b. 3790
c. 3910
d. 3907
e. 3970