1.

Which of the following is singleton set?1) Set of multiples of 72) Single digit perfect number3) Set of all two-digit numbers with digits sum is '3'4) Set of all odd prime numbers.​

Answer»

AnSweR:-

\Large{\red{\sf{Option\;2 - Single\;digit\; perfect\; numbers}}}

For Example:- A = {1,2,3,4,5}

Singleton Sets are {{1},{2},{3},{4},{5}}, All are single

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