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

Out of four images which one is the odd one out?

Using Only Five 5's and any mathematical operator make sum as 37

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Can you replace the question mark with the correct number?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

I add 5 to 9 and get 2. The answer is correct, so what am I?