Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What can go up a chimney down, but can’t go down a chimney up?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

On rolling two dices (six-sided normal dice) together, what is the probability that the first one comes up with a 2 and the second one comes up with a 5?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What is more useful when it is broken?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?