If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Which flower has two lips?

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?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

What work can one never finish?

The more of this there is, the less you see. What is it?