Question

How many 4 digit number can be formed from the digit 0,1,2,3,4,5 if digit are not repeated?

Answer 1

Hello dear!!

Here's your answer

We need a 4 digit number

So, first digit can't be zero

So, we have 5 possibilities for 1 st digit

Now, as there is no repetition, the remaining 3 places can be filled with 5 numbers in 5P3 = 60 ways

So, total numbers are 60 x 5 = 300