My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

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?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

I have feet, but no legs. Which animal Am I?

who is silent in the parliament?

What number should come in place of the question mark below?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?