Subject :Rea Class : Class 9
In each of the questions given below, there is a series with one or more terms/letters as missing each marked with '?'. Choose the correct alternative to replace the mark(s) '?'.
3, A, 5, B, ?, C,17, D, 33, ?
A10, F
B10, E
C9, F
D9, E
Ans 1:
Class : Class 10
Answer is D(9,E).
The numbers are result of increasing powers of 2 and then addition of 1to it.Eg. 5= Square of 2 +1