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
Show/Hide Answer
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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