A man is mailing out five passports to five different people. There are five envelopes on the table, each bearing the name of the owner of a passport. "Imagine I were just to stick the passports into envelopes at random," the man thinks. "I wonder how many ways I could commit the perfect blunder and put every passport in the wrong envelope?" How many ways can this be done?
click on the title for solution......
Showing posts with label puzzles eevry-day. Show all posts
Showing posts with label puzzles eevry-day. Show all posts
spping around
You are given three spinning tops with six, eight and ten numbered sides respectively. In how many ways can the three tops fall if at least two of the tops fall on the side marked with the number '1'?
click on the title for the solution....
click on the title for the solution....
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