What is the next number in the series?

15 29 56 108 208 ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

A man dies of old age on his 25 birthday. How is this possible?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Solve the following series:
AZ, GT, MN, __, YB

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Which is heavier: a ton of bricks or a ton of feathers?