Question

How many four digits number can be formed out of 1,2,3,5,7,8,9 if no digit is repeated any number how many of these will be greater than 3000

Answer 1

MAINLY IN QUESTION GIVEN,

4 DIGITS NO. SHOULD BE FORMED

OUT OF 12345789

BUT GREATER THAN 3000

Step-by-step explanation:

First of all ,

You need to start with,

3 in the thousands place ,

and start with every no. that don't have 6 and 0 and without repeating

LIKE,

3124,3125,3127,3128, etc.

SIMPLY,

repeat all the no. 345789 in thousands place.

In 4,

4123,4125,4127,etc

In 5,

5123,5124,5127, etc

AND SO SO ON ...

NOTE :

THERE WILL BE TOO MANY NUMBERS OF THIS QUESTION.