What is the next number in the series?

15 29 56 108 208 ?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What is black when you buy it, red when you use it, and gray when you throw it away?

What Time Should the last watch show in the below figure?

Count the number of lines in the image below ?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?