If eleven plus two equals one, what does nine plus five equal?

I am sure no one can have two things for dinner. what are they?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

What does this below rebus puzzle mean?

Which is the smallest number that you can write using all the vowels exactly once?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

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

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?