Question

How many numbers between 4000 and 5000 can be
formed with digits 2, 3, 4, 5, 6 such that no digit repeats
in a number.​

Answer 1

Answer:

Because the no. Lies between 4000 and 5000. It must have 4 digits and first digit must be 4.

It should be like 4 _ _ _.

In this first digit is fixed , next three places have to be filled.

Now, all three places can be occupies by any of the 6 digits given (2,3,4,5,6,7).

So numbers between 4000 and 5000 using thes digits are 1×6×6×6=216

Answer 2

Answer:

The above answer is wrong . Do not follow it . The correct answer is 60 .