| Direction: Select the related words/letters/numbers from the given alternatives. |
| 7 : 56 :: 9 : ? |
A) 63
B) 81
C) 90
D) 99
Correct Answer: C
Solution :
The relationship is x: x (x+1) \[\Rightarrow \] \[7:7\,(7+1)=7\times 8=56\] Similarly, \[9:9\,(9+1)=10\times 9=[90]\]
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