Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

Solve the mathematical equation in the picture below.

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

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

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59