Given a series : 2, 5, 12.5, ?, 78.125, 195.3125
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 31.25.
2 × 2.5 = 5
5 × 2.5 = 12.5
12.5 × 2.5 = 31.25
31.25 × 2.5 = 78.125
78.125 × 2.5 = 195.3125
Hence, the correct answer is 31.25.