How many 6 digit numbers greater than 7,40,000 can be formed by using the digits 5,6,7,2,8,9,0?
(Repetition is not allowed)
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Step-by-step explanation:
leaving the case where 2 is at 6th position
case = 1
70 _____5⁴
when at 6 position we don't use digits ( 7,0,8,9)
3* 6* 5* 4* 3* 2* = 2160
on adding
5⁴+ 2160 = 625 + 2160
= 2785
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