A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

what's the probability of getting a king or a queen from a pack of 52 cards?

How many times can you subtract the number 5 from 25?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Can you find out the number that should replace the question mark with a valid reason?

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?

Rearrange the letters in "new door" to make one word.

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

What makes this number unique: 8,549,176,320?