Can you find the key in the picture below?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

Buy me, smell me or deliver me, I do not change.

Who am I?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Move four matchsticks to the below square to form three squares?

How can you make a TV, a bed, a dog, and a car liquid?

Can you count the number of matches in the picture below ?

I have teeth but i don't bite. Who Am I ?