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

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Which Burger Is Different in below image?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

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

What Word am I Looking For ?

What month of the year has 28 days?