I have teeth but i don't bite. Who Am I ?

What has many teeth, but cannot bite?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

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?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What have one eye but still cannot see?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A woman who works in a sweet shop has a measurement of 32-26-36, is 5"4" tall, and wears size "6" shoes. What do you think she weighs?