It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

How is a fly different from a mosquito?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What month of the year has 28 days?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?