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

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Why do we preferably have round manhole covers and not square ones?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

Why did Buffon take the goal with him after every Juventus match?

What has 88 keys?

What can you catch but never throw?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?