IF 1 =2, 4 20, 6 =42, 9=90, Then 10 =?
Answer with Explanation
Given 1 = 1^1 + 1,
4 = 4*4 + 4 = 20
6 = 6*6 + 6 = 42
9 = 9*9 + 9 = 90
10 = 10*10 + 10 = 110
So answer to above number puzzle is 110
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Number Puzzle #2
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Ans: 110
Explanation: a*(a+1) = Ans
1 * (1+1) = 2
4 * (4+1) = 20
6 * (6+1) = 42
9 * (9+1) = 90
10 * (10+1) = 110
I also found the answer by this method only
1=1*2=2
4=4*5=20
6=6*7=42
9=9*10=90
10=..10*11=110
@475b8d4e40977d8dcdb1d2bad2cfb367:disqus , Thanks, this is a better and easy explanation.