Which is faster, Heat or Cold ? Explain.

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

Who am I?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Can you spot the hidden girl in the picture below?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

In the image below, can you find the value of an angle(y)

Which country gets ill every time?

When is the top of a mountain similar to a savings account?