Q. 13

The smallest 4-digit number having three different digits is
A. 1102

B. 1012

C. 1020

D. 1002

Answer :

To obtain the smallest 4-digit number, we need to use digits in the ascending order.


The smallest 3-different digits are 0, 1and 2


As, 0 can’t come at thousand place,


The answer will be 1, 002

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