Read the following series and find which number will come in place of the question mark (?).
7, 13, 21, 31, 43, 57, 73, ?
1
89
2
91
3
93
4
97
Read the following series and find which number will come in place of the question mark (?).
7, 13, 21, 31, 43, 57, 73, ?