Question

how many numbers less than 999 can be formed with the digits 2,3,4,5 when there is no restriction.
provide logical reasoning

Answer 1

what?

Answer 2

so the number will be a 3 digit number so number of ways of filling 3 of number with the given 5 numbers=5P3
=5x4x3=60 :)

Answer 3

no the answer is 84 and i got it:)anyways i appreciate your help

Answer 4

wait i made a mistakee

Answer 5

oh got it

Answer 6

good

Answer 7

it wuld be
5P3 +5P2+5P1

Answer 8

:)

Answer 9

wait that shuld be 85?

Answer 10

no its 84

Answer 11

m still missing something

Answer 12

number less than 999 can be of 3 digit or 2 digit or even one digit
and we have got 4 numbers as option
so we got to choose each digit from those 4 numbers

Answer 13

yes yes got that the answer is 84

Answer 14

damn nawwwwwwww
that wuld be
4P3+4P2+4P1

>.< silly mistakes

Answer 15

this is the second time i made a grand mistake >.<

Answer 16

thanks @madhu.mukherjee.946 :)

Answer 17

so (4p1*4p1*4p1)+(4p1*4p1)+(4p1)=84

Answer 18

welcome:)

Answer 19

(: