What is the word or phrase?

A father's child, a mother's child, yet no one's son.

Who am I?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

Can you find out the total number of triangles in the given figure?

Can you count the number of squares in the figure below?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

what does the below math rebus puzzle mean?