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nth Term of A.P

In the series...

Question

In the series;
641228742153862171413286
How many pairs of altenate numbers have a difference of 2?

A

One

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B

Two

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C

Three

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D

Four

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Solution

The correct option is B Two
Clearly there are two such pairs only namely (4, 2); (1, 3)

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nth Term of A.P

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