Question

9. How many numerals can be formed by using all the digits 2,4,5,7 and 9 with no digit being repeated? How many of these numbers are multiples of 5? How many of these are even? How many of these are greater than 70,000? How many of these are less than 50,000? ​

Answer 1

your first answer is

¹p1× ⁴p4 = 24

second answer..

⁴p4ײp1 = 48

third ans....

²p1×⁴p4 = 48

last ans...

²p1×⁴p4 =48

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