what does the below math rebus puzzle mean?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Through your logical capabilities, can you make 7 an even?

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?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?