Select the number-pair in which the two numbers are related in the same way as are the two numbers of the following number pair.
7 : 32
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 13 : 98
| Understanding | Application |
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Pattern: X : Y Y = [X × {(X + 1)/2}] + {(X + 1)/2} 7 : 32 [7 × {(7 + 1)/2}] + {(7 + 1)/2} = 28 + 4 = 32 |
Similarly, for 13 : 98 [13 × {(13 + 1)/2}] + {(13 + 1)/2} = (13 × 7) + 7 = 98 |