Is the answer from 2 to 10 or from 0 to 10?

Question

1.00/5 (1 vote)

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Someone on sololearn suggested this: "Want to print the first 5 even numbers?" in JS, and the answer was like this:

var x;
for(x=0;x<=10;x+=2){
document.write(x+" ");
}

What I have tried:

Output was 2 4 6 8 10 for the guy who posted the question, but when I tried it, it was 0 2 4 6 8 10??

Posted 4-Nov-17 0:49am

Member 13502831

Updated 4-Nov-17 0:56am

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OriginalGriff · Accepted Answer · 2017-11-04T00:56:00

Solution 1

Technically, neither of you are right: zero is an even number - Parity of zero - Wikipedia[^] - so the "First five even numbers" are 0, 2, 4, 6, 8.

So his solution is wrong - and so is yours! :laugh:

Posted 4-Nov-17 0:56am

OriginalGriff

Comments

Patrice T 4-Nov-17 7:10am

I think 10 is included.
x<=10

OriginalGriff 4-Nov-17 7:25am

It is - which makes for the first 6, not the first five... ;)

Patrice T 4-Nov-17 7:28am

agreed first 6

Richard Deeming 6-Nov-17 13:36pm

Negative numbers can be even too, so it really depends on your definition of "first"! :D