Why is 6 afraid of 7?
Can you find the odd number in the following? 2716, 4135, 5321 and 7145
Find the next number in the series below 21 32 54 87 131 ?
John can place six large boxes or nine small boxes into a carton. Can you find out in how many cartons can he place sixty-six boxes in total?
A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph. Which of the trains will be farther from point A when they meet ?
What has no start, end, or centre?
I taste better than I can smell. Who am I?
John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?
It's a protector. It sits on a bridge. One individual can see directly through it, while others wonder what it hides. What is it?
Can you find the dog hidden in a group of pandas?
If 1+9+8=1, what is 2+8+9?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
