What does this rebus means ?

PROG WORKRESS

Find the next number in the following series:
6, 14, 26, 98, __?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

Which tank will fill first?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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?

What does this simple rebus mean?

Move three sticks of the spiral below to form a square.

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?