Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Move three sticks of the spiral below to form a square.

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

What occurs twice in a week, once in a year but never in a day?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?