Wednesday, September 17, 2014

Number Series


                      Find out the Odd one??


Four of the following five are alike in a certain way and so form a group. Which is the one that does not belong to the group??


                1) 78         2) 48         3) 72         4) 54         5) 42


Substract -1 from each number.the result obtained by each one contains Prime Numbers expect '78'. So odd one is Option (1)78.

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