Can you make four (4) nines (9) equal 100?
What is black when you buy it, red when you use it, and gray when you throw it away?
What brings you down but never up?
Can you count the number of triangles in the picture below?
Rectify the following equality 101 - 102 = 1 by moving just one digit.
They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?
You can see three almost identical images below. Can you spot the odd one out from them?
Find the mistake in the below maths equations A = 2 A(A-1) = 2(A-1) A2-A = 2A-2 A2-2A = A-2 A(A-2) = A-2 A = 1
Manish has to secure 40% marks to pass his B.tech final exams. He got just 40 marks and failed by 40-marks. What is the maximum marks?
Rearrange the letters in "new door" to make one word.
As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki