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

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

How can you tell a raw egg from a hard-boiled egg?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
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COME SERVED