Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?