Others Maths Puzzle

by how many ways 7 friends can stay in 10 different hotel when no two friends can stay in the same hotel?

Read Solution (Total 2)

First friend has 10 options ,then second friend has 9 options
So going in this way we have total no of ways=10x9x8x7x6x5x4=604800 ways
11 years agoHelpfull: Yes(2) No(0)

10x9x8x7x6x5x4=604800
11 years agoHelpfull: Yes(1) No(0)

Others Other Question

Mean and S.D of items are found to be 50 and 8 but while calculating those two items were taken as 45 and 55 instead of 54 and 46 fined correct S.D ? My love,
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