Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable