Need to know what part of the equation to do first. If you take it at face value then the answer is 5. But put a couple of brackets in & it would change the answer completely.

Edit.

No idea what an exclamation mark at the end means - never used it when I was at school in the early 80's but then I only did "O" level maths. I just thought Chizz was exclaiming the answer.

But why do you have to say factorial to make it correct ? The question is not 'what is the factorial of this equation'

The only way you can solve the problem using BODMAS principles(or rather agree the answer) is by recognising the exclamation mark as the mathematical symbol for Factorial rather than, as many would, see the exclamation mark as indicating a surprising answer.

But why do you have to say factorial to make it correct ? The question is not 'what is the factorial of this equation'

The only way you can solve the problem using BODMAS principles(or rather agree the answer) is by recognising the exclamation mark as the mathematical symbol for Factorial rather than, as many would, see the exclamation mark as indicating a surprising answer.

I didn't even see the ! on the original question - I thought people were just saying the answer was 120 and then taking it further to say that is 5!

order of operations convention designed to overcome unintentional ambiguity. 230 - 220 x 0.5 is calculated as 230 - (220x0.5), not (230-220) x 0.5. If the latter is what is wanted that is the form in which it would need to be written.

Edit - I am wrong. 5! = 120. Thank-you for introducing me to factorials. If I'd bothered to read the thread I'd have discovered this by post 4.

## Comments

10 halved (as 0.5 is half a whole number)

10 x 0.5 = 5

5! = 5x4x3x2x1 = 120

QED

Am sure we have had multiple bidmas/Bodmas type questions on here before

5! = 5 × 4 × 3 × 2 × 1 = 120

Sponsored links:In fact, it was the exact same title.

Furthermore, it was the same person who created the thread.

https://forum.charltonlife.com/discussion/86194/230-220-x-0-5-5/p1

Need to know what part of the equation to do first. If you take it at face value then the answer is 5. But put a couple of brackets in & it would change the answer completely.

Edit.

No idea what an exclamation mark at the end means - never used it when I was at school in the early 80's but then I only did "O" level maths. I just thought Chizz was exclaiming the answer.

The question is not 'what is the factorial of this equation'

I was taught it as BIMDAS; Brackets, Indices, Multiplication/Division, Addition/Subtraction.

Sponsored links:6ft 2inches

I didn't say i was a good maths teacher!

The bloke who created the theory behind this died at 20 so shouldn't be too difficult.

Edit - I am wrong. 5! = 120. Thank-you for introducing me to factorials. If I'd bothered to read the thread I'd have discovered this by post 4.

I've been sums shamed.