Can anyone tell me a word in the English dictionary which has a silent 'z'?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

Be active and find the killer in the picture Riddle below.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

If eleven plus two equals one, what does nine plus five equal?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?