Select the number from among the given options that can replace the question mark (?) in the following series.
64, 51, 38, ?, 12, -1
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 25
Given series: 64, 51, 38, ?, 12, -1
The logic used here is:
64 - 13 = 51
51 - 13 = 38
12 - 13 = -1
So, 38 - 13 = 25
Hence, option 1 is the correct option.