Can you count the number of triangles in the given figure?
If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age. How old will John be two years from now?
I throw two dice simultaneously. What is the probability of getting a sum as 9 of the two numbers shown?
What is more useful when it is broken?
What is common among 11, 69, and 88?
A professor thinks of two consecutive numbers between 1 and 10. 'A' knows the 1st number and 'B' knows the second number A: I do not know your number. B: Nor do I know your number. A: Now I know. What are the four solutions for this?
A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?
In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.
If Rajina's daughter is my daughter's mom, who am I to Rajina?
Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?
What's the next in the series? H, Be, F, S, Mn, Kr, In, Gd, Tl, ?
In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.