Question

Using the digits 6,7,8,9 &0, how many four digit numbers divisible by 10 can be formed, if no repetition of
digits is allowed?​

Answer 1

Answer:

We can make 24 four-digit numbers made of 6, 7, 8, 9, 0 which are divisible by 10.

Step-by-step explanation:

Now we know that,

Should a number be divisible by 10 it should end with 0's.

Hence,

0 has a fixed place at the last.

Now,

The digits are 6, 7, 8, and 9

We must for 4 digit number.

When 0 is fixed, we have 4 more numbers left, so 1st place can be fixed by any 4 numbers, next by any 3 number and the 3rd place be filled by any 2 numbers.

So,

Possible numbers are 4 × 3 × 2 = 24

Hence,

We can make 24 four-digit numbers made of 6, 7, 8, 9, 0 which are divisible by 10.

Hope it helped and believing you understood it........All the best