How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What is full of holes but still holds water?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

I always drive my customer away.

Who am I?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

What four weights can be used to balance from 1 to 30 pounds?