Q: When a number is decreased by 20 of itself the result is 11 what is the number?

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Three Working backwards from 11 then add 4 to make 15 then dividing 15 by 5 makes 3

11-9=v

11 is a prime number because the factors of 11 are only 1 and itself.

11

11 x 11

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"Decreased by" just means "minus," so that's C-11.

Three Working backwards from 11 then add 4 to make 15 then dividing 15 by 5 makes 3

1/3x - 11 = 38 Therefore, 1/3x = 49 Therefore, x = 49 x 3 = 147

11-9=v

11-n

Its 11

IF the question means: What number, multiplied by 2, and reducing the answer by 9, gives a result that is greater than 11?ANSWER: Any number greater than 10.Let's try 11.2 x 11 = 22.22 - 9 = 13, which is greater than 11.But if we try 10 ...2 x 10 = 20.20 - 9 = 11, but 11 is not greater than 11! So we need a higher number than 10.Try it for yourself with ANY number greater than 10!-----------------------------------------------------------------------------------------Alternative answer.If the question means "What number decreased by 9, and then doubled, produces a number greater than 11?"...... then work it out this way, working backwards:What number is greater than 11?We could say '12' is greater than 11.Half of 12 is 6. Add 9 to 6 = 15.So, now, let's try 15.15 decreased by 9 is 6.Twice that number is .... 12 (2 x 6), which is greater than 11!But this would work for ANY number from 15 upwards!

11 is a prime number because it has only two factors which are itself and one

11 is a prime number because the factors of 11 are only 1 and itself.

11

It is: 11*11 = 121

11 x 11