Question

Without repetition,using digits 2,3,4,5,6,8 and 0, how many numbers can be made which lie between 500 and 1000?​

Answer 1

Answer:

right answer is 90

Step-by-step explanation:

First digit can be 5,6,9

Second digit can be all of the above mentioned numbers

Third digit can be all the digits

Therefore

3×6×6=108

And if we include 1000,then 109.

Without repetition:

First digit can be 5,6,9

Second can be all except first i.e.5

And third all except 1sr and 2nd digit..4

Therefore .

3×5×4=60 and including 1000

Answer 2

Answer:

90

Step-by-step explanation:

first digit 5,6,9

second digit and third digit can be all

therefore 3x6x6=108

and 3x5x4=60 and including 1000