The Answer to the Question
is below this banner.
Here's the Solution to this Question
Number of ways in which 5 digit number can be formed from digit 0-6 if-
(a) Repetition is allowed-
(b) Repetition is not allowed
(c) one (1) is not to be used as the 1st digit and repetition is not allowed-
(d) one (1) is not to be used as the 1st digit and repetition is allowed