All the numbers except 345 are one more than the cube of a certain number.
All numbers are prime numbers but when we reverse the digits all except 23 remain prime numbers.
All numbers are prime numbers except 15.
The unit digit remains same, and the thousand place, hundredth place and tenth place changes and follow particular pattern except in 5686.
All are multiple of 3 except 83.
761 is the only prime in the group.
131 is the odd one out as it is the only prime number.
144 is the square of 12 whereas the rest are cube of certain numbers.
3781 is the odd one out as other numbers contain only odd digits.
Each number except 380 is either one more or one less than the square of a certain number.
315 is the odd one out as the rest all are squares of different numbers.
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