Solve it quick. And tell me the answer with explanation..
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Gotcha!!!
notice the pairs in the following manner,
1st pair
3 and 13,
how do we get it,
3 × 4 + 1 = 12 + 1 = 13
2nd pair
5 and 21
how do we get it?
5 × 4 + 1 = 20+ 1 = 21
3rd pair,
2 and 9
how do we get it?
2 × 4 + 1 = 8 + 1 = 9
so as seen , there is a pattern of
number × 4 + 1
in case of 1,
we have,
1 × 4 + 1 = 4 + 1 = 5
5 is the number.
notice the pairs in the following manner,
1st pair
3 and 13,
how do we get it,
3 × 4 + 1 = 12 + 1 = 13
2nd pair
5 and 21
how do we get it?
5 × 4 + 1 = 20+ 1 = 21
3rd pair,
2 and 9
how do we get it?
2 × 4 + 1 = 8 + 1 = 9
so as seen , there is a pattern of
number × 4 + 1
in case of 1,
we have,
1 × 4 + 1 = 4 + 1 = 5
5 is the number.
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