Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Digital Literacy Computer Basics Computer Basics Binary

esteban santacruz
esteban santacruz
Courses Plus Student 89 Points

quiz question 3

is there a an easier way i can understand how the system works.. i thought i figured it out but 000000111.. i thought equalled 6 because the 1s are in the 3r place 2 place and 1 place.. so 3 plus 2 plus 1 equal 6

1 Answer

james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

what you are calling the 3s place is the 4s place. each place in a binary number is a power of 2, starting from the right at 2^0. so the third from the right place is 2^2 or 4. a 0 there means no 4s and a one means one 4. so 111 is 7. 1000 is 8.