There was a strange boy who was born before his father. How can this be possible?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

Can you place three balls such that the equation shown in the picture holds true?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What is the last thing you take off before bed?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?