Find the invalid no.from the following series 13, 18, 25, 30, 37, 40 Choose the correct option:
A) 13  B) 18  C) 40  D) 25  E) 30
The differences between two successive terms from the beginning are 7, 5, 7, 5, 7, 5. So, 40 is wrong.   40
<result>C</result>
Find the invalid no.from the following series 13, 18, 25, 30, 37, 40