The answer:
90
Explanation:
The logic follows here is: (first square x second square – first square)
In row I: 6 × 13 = 78 – 6 = 72
In row II: 4 × 7 = 28 – 4 = 24
Similarly in row III: 9 × 11 = 99 – 9 = 90
Question: What is missing number?

The answer:
90
Explanation:
The logic follows here is: (first square x second square – first square)
In row I: 6 × 13 = 78 – 6 = 72
In row II: 4 × 7 = 28 – 4 = 24
Similarly in row III: 9 × 11 = 99 – 9 = 90
Question: What is missing number?