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How many two digit numbers can be formed using three non zero numerals as digits

Answers (1)

Case-1 Repitition of digits is allowed

Three number is arranged at 2 places, so 3 × 3 = 9 numbers

 Case-2 Repitition is not allowed

3P2 =  3x2 = 6 numbers

Posted by

Ravindra Pindel

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