I’m tall when I’m young, and I’m short when I’m old. What am I?
If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
When my father was 31 I was 8. Now he is twice as old as me. How old am I?
Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?
A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?
It can be easily calculated that the digits 0 to 9 can be arranged into 3628800 distinct ten-digit numbers. But do you know how many of these numbers are prime?
If, A = 1 B = 2 C = 3 ... ... Z = 26. Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.
I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?
I am under you when I am whole. I shift above you if you remove the first letter. I come all around you if you remove the second as well. Can you tell me who I am?
I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?
I’m orange, I wear a green hat and I sound like a parrot. What am I?
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.
