How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?
Accidentally, two trains are running in the opposite direction and enter a tunnel that is 200 miles long. A supersonic bird that has fled the lab and taken shelter in the tunnel starts flying from one train towards the other at a speed of 1000 mph. As soon as it reaches the second train, he starts flying back to avoid collision and meets the first train again at the other end. The bird keeps flying to and fro till the trains collide with each other.
What is the total distance that the supersonic bird has traveled till the trains collided?
I make two people out of one. What am I?
How many times can you subtract the number two from the number fifty?
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?
What begins with T, ends with T, and has T in it?
Alpha is Beta's sister.
Gamma is a Beta mother.
Delta is Gamma's father.
Tango is Delta's mother.
Then,
How is Alpha related to Delta?
What four weights can be used to balance from 1 to 30 pounds?
What will you call your mother's brother's brother-in-law?
Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?
What do you think with the below Picture ?
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.