If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Replace the question mark with the number below given a simple math problem.

What is both possible and impossible at the same time?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

They are three errirs in this question. Can you find them?

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?