what does the below math rebus puzzle mean?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

What begins with T, ends with T, and has T in it?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

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?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H