There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can you decipher the below rebus?

PBLUESAISNUERSES

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

Next Number in the Series,

5, 16, 49, 104, ?

You need to arrange three 7 and mathematical symbols to form number 1?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?

Why is a river so rich ?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?