What is the next number in the series?

15 29 56 108 208 ?

Replace the question mark with the correct number below.

Replace the question mark with the correct number.

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

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?