Question

49:81::100:?
a)144
b)64
c)169
d)none of these ​

Answer 1

☆ANSWER☆

✅Option A is correct

☆EXPLANATION☆

7² : 9² :: 10² : 12²

49 : 81 :: 100 : 144

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Answer 2

Given,

49:81::100:

To find,

The number proportionate to 100

Solution,

49:81::100:x

7² = 49

9² = 81

10² = 100

So, x will be the square of the number that is 10 + 2, which is 12

x = 12² = 144

Proportion = 49:81::100:144

Thus, the correct answer is option A which is 144