I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Complete the table series riddle by finding the number that can replace "??".

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

What is the word or phrase?

What has many keys but can’t open a single lock?

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

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?