Assuming that reperitone are not
permitted, how many 5 digit number can be formed
from the six digits 1,2, 3, 5, 7,8
Answers
Step-by-step explanation:
3 digits formed from 2, 3, 5, 6, 7, 9
Permutation formula =
(n−r)!
n!
=
(6−3)!
6!
3
6
P=66×5×4
=120
2. Numbers less than 400 can start with digits 2 and 3 only.
2×6×6=72
3. Even numbers are 2 and 6 from the given 6 digits.
2×6×6=72
4. Odd numbers are 3, 5, and 7 from the given 6 digits.
6×6×3=108
5. 5 is the only digit from 6 digits have multiples of 5.
6×6×1=36.
HOPE IT IS HELPFUL
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