4, 7, 13, 25, 49, (...)
Choices:
A) 22  B) 35  C) 97  D) 32  E) 25
Explanation :   4   4 × 2 - 1= 7   7 × 2 - 1 =13   13 × 2 - 1 = 25   25 × 2 - 1 = 49   49 × 2 - 1 = 97   Answer : Option 97
<result>C</result>
4, 7, 13, 25, 49, (...)