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

Whats the next number in the below number sequence pattern.

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

How many times in a given day, minutes and hour clock comes in a straight line ?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Why is a river so rich ?

Can you make a six-letter word using the letters N, A and B ?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?