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Diego Souza de Andrade
1,807 PointsI think something is wrong
Hi, I have calculated some answers and none of them are right, there is a chance, even if small, that the quiz is broken or something? haha
If the problem are my calculations, can somebody help me? thanks!
1 Answer
james south
Front End Web Development Techdegree Graduate 33,271 Pointsthe quiz is ok, it's not broken. when you see something like 4 * 33 % 7 + (4+5), the first thing to do is anything in parens (), so 4+5 is 9, then the proper order is that multiplication, division and modulo are of highest order, and thus are evaluated first, left to right. addition and subtraction are of lower order, and are done after *, / and %. so after we do the addition in the parens, what is left? a mult, a mod and a plus. so you would do 4 * 33, that's 132, then you would take 132 mod 7, which is 6, then you would add that to the 9 you have from the parens, and the result is 15. here are some other examples: 4 / 2 % 13 * 5 + 8 = 18. 43 - 12 * 2 + 17 = 36.