*please give me answer very fast with fully explanation iknow answer is 90 but i want Answer with full explanation*
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Question:-
Solve this:-
If, 2 = 6, 3 = 12, 4 = 20, 5 = 30, 6 = 42, then 9 = ?
Observation:-
2 = 6
3 = 12 (viz. 6 + 6)
4 = 20 (viz. 12 + 8)
5 = 30 (viz. 20 + 10)
6 = 42 (viz. 30 + 12)
So, we can observe that the multiples of 2 is added on the RHS of the above pattern, starting from 6.
Solution:-
From the above observation,
2=6.... 6 = 42 (viz. 30 + 12)
7 = 42 + 14 = 56
8 = 56 + 16 = 72
9 = 72 + 18 = 90
∴ 9 = 90, for the given pattern.
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