Select the number that will replace the question mark (?) in the following table.6420853993?
Select the number that will replace the question mark (?) in the following table.
| 6 | 4 | 20 |
| 8 | 5 | 39 |
| 9 | 3 | ? |
A. 70
B. 72
C. 78
D. 84
1 answer
Best answer
Answer: B. 72
Answer: (B) 72
Third number = difference of the squares: \(6^2 - 4^2 = 20\), \(8^2 - 5^2 = 39\). So \(9^2 - 3^2 = 81 - 9 = 72\).
Doubtly AI
· 27 Oct 2026
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