Find the number of squares in the below picture

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

What does this say?

XLR8

Which word does the below Plexor means ?

What can you see in the middle of March and April that you can never see in any other month?

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

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Why is the Hole below a Lock?