Why 1729 is a magic number? Answer Logically.

Which Burger Is Different in below image?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

Prove that the below maths equation is true.

8 + 8 = 91

What does this rebus means ?

PROG WORKRESS

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

Which Travels Faster? Solve below famous picture riddle:

What kind of band never plays music?

Move three sticks of the spiral below to form a square.