When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

Why is it very easy to weigh a fish?

What came first, the chicken or the egg?

When it is alive we sing, when it is dead we clap our hands. What is it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?