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  • How many 3-digit numbers can be formed using the digits 1, 2, 3, 4, 5, and 6 without repetition?  Option: 1 360<div clas

How many 3-digit numbers can be formed using the digits 1, 2, 3, 4, 5, and 6 without repetition?

 

Option: 1

360


Option: 2

120


Option: 3

90


Option: 4

30


Answers (1)

best_answer

The first digit can be any of the 6 available digits. For the second digit, we have 5 remaining choices, and for the third digit, we have 4 remaining choices. Therefore, the total number of 3-digit numbers without repetition is . However, since the question specifies "without repetition," we need to subtract the cases where the first digit is 0, which is not allowed. Thus, the correct answer is .120-30=90


 

Posted by

SANGALDEEP SINGH

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