How many bananas can you eat if your stomach is empty?

What has 13 hearts but no other organs?

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Before Mount Everest was discovered, what was the highest mountain in the world?

Aaron, Brad, Christopher, Danny and Elvis decided to play a game of tiddlywinks. In this game they decided that one win will get 1 point for winning, 0 for losing and 1/2 in case of a tie.

They finished the game in alphabetical order and it was found that the scores were different for each person.

Based on the following two statements, can you find out the result of the individual games?
Brad: No one could finish like me, without a loss.
Elvis: No one played worse than me, I finished without a single win.

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

Why is it very easy to weigh a fish?

With the help clues provided in the image, can you find the 5 digit key?

What is black when you buy it, red when you use it, and gray when you throw it away?