Question

Find the number lying between 100 and 1000 can be formed with digits 0,1,2,3,4,5 if no didgit is repeated

Answer 1

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Answer 2

Hii There!!!

Since, numbers lying between 100 and 1000 will be three digit numbers.

So, it can be arranged in ___ , ____, ____ places.

i.e, at unit, tens and hundreds place.

If we put 0 at unit's place then the number will be a two digit number.
Hence, we can't consider 0 at unit's place.

Hence, number of arrangements at hundreds place = 5

Similarly, number of arrangements at tens place = 5

And number of arrangements at units place = 4

Therefore, total number of ways = 5 × 5 × 4
= 100 ways.

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