00:01
Hello students we have a question how many numbers between 60 ,000 and 80000 can be formed using digits 3 to 7 when digit when digit any digit can be used any number of times so here repetition of digit is allowed so let's start our solution first we will write the given digits given given so we have digits given between 3 to 7 that is 3, 4, 5, 6.
00:49
So we have given a condition that the number form should be, number form should be between 60 ,000 and 18 ,000.
01:16
The number form should be between 60 ,000 and 80 ,000.
01:22
As we have given the digits from 6 to 7, so the required numbers can be formed by using two digits only, that is 6 and 7.
01:34
If we use 6 and 7 at the very beginning of the number, then this number will be between 6 ,000 and 80 ,000.
01:43
Otherwise it will be between less than 60 ,000.
01:46
So total digits we have five.
01:51
The number form should be five digit number...