If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Do You See It?

Name a key which is hardest to turn.

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

A father's child, a mother's child, yet no one's son.

Who am I?

Our product and our sum always give the same answer. Who are we?

Can you identify the hidden rebus in the image below?

Which is faster, Heat or Cold ? Explain.