Solution:

The spiral B consists of two parts.

Solution:

Michelangelo juggles the diamonds across while crossing the bridge.

Solution:

100

Series of number that do not contain albhabet 'T'

Solution:

28 =>1+2+4+7+14

cannot be 1 (as number cannot be included)

Solution:

prinka is 10, in a system that awards five for each vowel.

Solution:

Upon reaching each room, he found out that the window facing the dead body was closed. He had to open the window himself. This tells that there was somebody else with him who closed the window. If he would have committed suicide, at least one window would have been open.

Solution:

This statement is true but only in a specific case i.e. if both of the siblings continue to live till the day the younger is as old as the elder one was during the time of their birth.

Solution:

There is no mention if you can use sign or not and thus the only possible way to get this is as follows:

(15 - 9) + (13 - 7) + (7 - 1) + (9 - 1) + (13 - 9)

If you solve inside the brackets, you will get the following equation
6 + 6 + 6 + 8 + 4
Adding all these numbers, you will get 30 which is the required sum.

Solution:

Align the toothpicks to form TEN. Use one toothpick for each of the lines.

Solution:

This is more of a philosophical question than being a riddle or a puzzle. The action of Brian directly led to the result which is the death of Chris. Thus he murdered Chris. In a sense, Chris died due to the lack of water. It is the circumstances that ultimately led to his death.

Solution:

The driver is actually the wife and mother.