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

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

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Identify The phrase in the picture.

A guard is positioned at the one side of the bridge saying ‘A’. His task is to shoot all those who try to leave from ‘A’ to the other side and say ‘B’. He also need to welcome the person who comes from another side ‘B’ to his side ‘A’. The guard comes out of his post every 1 hour and looks down the bridge for any people trying to leave. You are at side ‘A’ and wish to go to another side ‘B’. you also know that it would take 1:45 hr to cross the bridge. How will you cross the bridge?

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

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

Can you find out the missing number in the grid?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?