Prove that the below maths equation is true.

8 + 8 = 91

Find the missing letter in the last circle logically in the given below picture.

What does the below rebus riddle means?

If 21x = 79x, what is the value of x?

what does the below rebus mean?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

How many words can a pen with half refill write?

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?

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?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.