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I'm stuck on the maths for C# basics the question is 8 * (7+8) % 5 + 6/2
I thought you would do the parenthesis first leaving 15 between them, multiplied by 8 giving the value of 120, then taking 5 away you are left with 115, then dividing 6 by 2 is 3, adding 115 and 3 together gets 118 but it is wrong. I'm not sure how I'm messing up the order but any help would be appreciated
Jennifer NordellTreehouse Teacher
It's not subtracting by 5 .,.. it's getting the mod of 120 and 5. So it looks like this.
8 x (7 + 8) % 5 + 6 /2 =
8 x 15 % 5 + 6/2 =
120 % 5 + 6/2 =
0 + 6 / 2 = because 120 divided by 5 has a remainder of 0 aka it's evenly divisible by 5
0 + 3 =
Final answer: 3
Anjali Pasupathy28,883 Points
Here's a trick for the modulo!
7 + 8 is 15, which is divisible by 5. Because of this, multiplying that number by any other integer would still create a number divisible by 5. Because 8 * (7 + 8) is going to be divisible by 5, modding that number by 5 can only result in 0. That means that 8 * (7 + 8) % 5 is going to evaluate to 0, so you only need to worry about 6/2.
hey thanks you two are live savers ahaha