I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Look at the picture and find out which square is not linked with any of the other squares.

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What does below pictogram mean?

What number divided by 4 is the same as that number minus 4?

You need to arrange three 7 and mathematical symbols to form number 1?

There are hundred red gems and hundred blue gems. The blue gems are priceless while the red gems equal wastage. You have two sacks one labeled Heads and the other Tails. You have to distribute the gems as you want in the two sacks. Then a coin will be flipped and you will be asked to pick up a gem randomly from the corresponding sacks.

How will you distribute the gems between the sacks so that the odds of picking a Blue gem are maximum?

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