John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What has no start, end, or centre?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Which is the smallest number that you can write using all the vowels exactly once?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

What four weights can be used to balance from 1 to 30 pounds?