Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Can you count the number of triangles in the given figure?

Whats the next number in the below number sequence pattern.

Imagine you are in a room with no windows or doors. How will you get out?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Which tank will fill first?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?