A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I cannot talk, but I always reply when spoken to. What am I?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

How many times can you subtract the number 5 from 25?

Can you count the number of lines in the below picture?

Find the next number in the series.
1 10 24 43 67 ?

The dirtier I get, the whiter I look. Who am I?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

Can you find out the total number of triangles in the given figure?

Can you make a six-letter word using the letters N, A and B ?