Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

How many four digit numbers can be formed from 0-9? And if: repetitions are allowed the number is less than 5000 and no repetitions are allowed? no repetitions are allowed? the number ends in 5 and repetition is allowed?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!