How many three digits numbers can be formed by using the digits 1,2,3,4,5.
Choose the correct choice from the following answers:
A) 255
B) 135
C) 225
D) 125
E) 175
We have to determine the total number of three digits numbers formed by using the digits 1,2,3,4,5. Clearly the repetition of digits allowed.Units place can be filled by any of the digits in 5 ways. Simillarly each one of the tens and hundreds place can be filled in 5 ways. Total number of required number =5x5x5 =125 Answer : 125
<result>D</result>
How many three digits numbers can be formed by using the digits 1,2,3,4,5.