By using 'because' continuously three times, can you make an English statement ?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?