How many four digits number can be formed by using the digits 0, 2, 4, 6, 7 if repetition of digits is allowed?
Answers
Answered by
2
Step-by-step explanation:
_ _ _ _ are four letter word
first letter can be filled in 4 ways
second one is filled with 5 ways (repetition allowed)
similarly the 3 and 4 th letter
no of four digit numbers = 4×5×5×5=4×125=500 ways
hope this will help u
Similar questions