Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.
How many miles does the pigeon travel?
You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.
Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.
Can you make a six-letter word using the letters N, A and B ?
I have branches, but no fruit, trunk or leaves. What am I?
It's a test that will check your IQ.
Suppose you have one 11 minute hourglass and one 13 minute hourglass.
Can you measure exactly fifteen minutes using them ?
How can you drop a raw egg from a height onto a concrete floor without cracking it?
There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.
What is it?
Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?
Can you move 2 matchsticks to form four equal sized squares.
using four eights (8) and a one (1) and one mathematical symbol , create the number 100
Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.
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