Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

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

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What number do you get when you multiply all of the numbers on a telephone's number pad?

Decode the movie name from the below picture?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Find the missing number in the sequence below:

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?