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

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

All Marigolds are flowers.
Few Flowers are used to make colors.
Therefore, some Marigold are used to make colors.

True Or False?

What does below chemistry rebus means?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

How is the moon similar to a dollar?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Can you solve the below tricky visual equation?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?