Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

What is at the end of a rainbow?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What have one eye but still cannot see?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What word begins and ends with an E, but has only one letter?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Solve the puzzle by telling what does below picture means.