How the answer of this a=[1,2,3,4,5] b=[2,4,5,6]

Question

res=a-b
print res
Answer= [1,3] what about 6 then

Answer 1

Ok it same like set functions of mathematics ..then

Answer 2

Thank u so much Alexander

Answer 3

a-b means all numbers that are in a, but not in b, so ans is [1,3]

Answer 4

Yes

Answer 5

I dont know Ruby, but maybe

Answer 6

You are welcome

Answer 7

bro you just remove the common element of both array and put result remaining element of an array

Answer 8

This is just like "sets" in mathematics. What elements can you find in a, but not in b. Then you print it out.