Find the total number of 3 digit numbers that can be formed from 6 digits 2,3,5,6,7 and 9. How
many of these are less than 400?
permutations and combination
Answers
Answered by
1
Step-by-step explanation:
1. 3 digits formed from 2, 3, 5, 6, 7, 9
Permutation formula =(n−r)!n!
=(6−3)!6!
36P=66×5×4
=120
2. Numbers less than 400 can start with digits 2 and 3 only.
2×6×6=72
Hope you like it !
Answered by
0
Answer:
11 13 17 this is the answer thankyou
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