Prove that the below maths equation is true.

8 + 8 = 91

I’m tall when I’m young, and I’m short when I’m old. What am I?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

What is more useful when it is broken?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?