How many numbers less than 1000 can be formed with 1,2,3,4,5 if repetition is not allowed
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numbers less than 1000 = numbers will contain 3 digits, 2 digits and single digit
3 digits = 5×4×3 = 60
2 digits = 5×4 = 20
single digit = 5
now, add all the numbers = 60+20+5 =
85
85 numbers can be formed with 1,2,3,4,5
#Hassan
3 digits = 5×4×3 = 60
2 digits = 5×4 = 20
single digit = 5
now, add all the numbers = 60+20+5 =
85
85 numbers can be formed with 1,2,3,4,5
#Hassan
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