People put me on the table and cut me but do not eat me. What am I?

How many times can you subtract the number two from the number fifty?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Prove that the below maths equation is true.

8 + 8 = 91

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?