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

Mother's Name is Mrs. SIXTY TWO
Son's Name is FIFTY TWO
Daughter's Name is FORTY TWO
What is Name of Father?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

What does this say?

XLR8

Can you find out which number multiplied by itself will give the output as 12345678987654321?