Search Results for Three Coins Need to be placed in 5*5 grid such that no coins can be placed in same row and same columns.How many ways we can do it?

Question

anonymous · Answer

Start with the first row, you have 5 choices for where to put the coin.
Now on the second row, you only have 4.
On the 3rd row you have 3.
Then 2.
Then 1.
So the answer is 5! = 120

anonymous · Answer

No two coins can be placed in same row and same column

anonymous · Answer

ah, my bad, i have this habit of reading what i want to lol.

anonymous · Answer

His solution still works!

anonymous · Answer

choice given is 1) 1800
2)1200
3)600
4)900

anonymous · Answer

lets say you keep first coin at 1st row 1st column 
2nd coin at 2nd row 2nd column
and 3rd coin at 3rd row 3 3rd column

anonymous · Answer

alright. its 5 choices for the 1st row, 4 for second, 3 for third.  Thats 60 combinations, but then i want to multiply that by how many ways i can choose 3 rows out of 5.
Thats 5C3 = 10
so 60*10 = 600.

anonymous · Answer

let me understand please i will take ur help if i need it