In this type of questions some problematic situations are provided you have to analyse the situation and give the logical correct solution for the problem.
Find the missing number in the series: 9, 7, 4, 2, ?
Show answer & explanation
Correct answer: C
Explanation
9 → 7 = −2
7 → 4 = −3
4 → 2 = −2
Pattern: −2, −3, −2, −3
The next difference will be −3
So:
2 − 3 = −1
Correct answer: (3) −1