what is a five digit number contains the digits 1,4,5,6 and 7 but not in that order. arrange these digits so that the resulting number divisible by 4. In how many ways can this be done?
+118608 what is a five digit number contains the digits 1,4,5,6 and 7 but not in that order. arrange these digits so that the resulting number divisible by 4. In how many ways can this be done?
A number is divisable by 4 if the last 2 digits are divisable by 4.
I think the only 2 digit numbers that can be made that are divisable by 4 are 16, 56, 64 and 76 (4 possibilities)
If the last 2 digits are 16 then there are 3! ways ways that the others can be ordered. That is 6 ways.
The same applies for each of the other final pairs .
So I believe that there are 4*6 = 24 possibilities.
+118608 what is a five digit number contains the digits 1,4,5,6 and 7 but not in that order. arrange these digits so that the resulting number divisible by 4. In how many ways can this be done?
A number is divisable by 4 if the last 2 digits are divisable by 4.
I think the only 2 digit numbers that can be made that are divisable by 4 are 16, 56, 64 and 76 (4 possibilities)
If the last 2 digits are 16 then there are 3! ways ways that the others can be ordered. That is 6 ways.
The same applies for each of the other final pairs .
So I believe that there are 4*6 = 24 possibilities.
