In the following series, how many pairs of consecutive numbers have a difference of 2?
6 4 1 2 2 8 7 4 2 1 5 3 8 6 2 1 7 1 4 1 3 2 8 6

Two

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Three

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Five

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Six

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Solution

The correct option is D Six
series
$64 - -- - 12287 42 - - - 1 53 - - - 86 - - - 21714 13 - - - 2 86 - - -$
total six occurrences.
option D

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