| 5 | 5 | 2 |
| 2 | 4 | 1 |
| 8 | 3 | 10 |
| 40 | 30 | ? |
A) 10
B) 12
C) 13
D) 20
E) None of these
Correct Answer: A
Solution :
Explanation Option (a) is correct. In the first column, \[\frac{5\times 2\times 8}{2}=40\] In the second column, \[\frac{5\times 4\times 3}{2}=30\] \[\therefore \] Missing number = \[\frac{2\times 1\times 10}{2}=10\]
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