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HTTP/2 308
server: nginx
date: Thu, 29 Jan 2026 00:29:08 GMT
location: /tutorial/
refresh: 0;url=/tutorial/
HTTP/2 200
server: nginx
date: Thu, 29 Jan 2026 00:29:08 GMT
content-type: text/html; charset=utf-8
set-cookie: s=eb37691b-e0e7-46f0-9944-ef368a41a015; Path=/; Expires=Thu, 26 Feb 2026 00:29:08 GMT; Max-Age=2419200; Secure; HttpOnly
vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding
link: ; rel=preload; as="font"; crossorigin=""; type="font/woff2"
x-nextjs-stale-time: 300
x-nextjs-prerender: 1
x-nextjs-postponed: 1
cache-control: private, no-cache, no-store, max-age=0, must-revalidate
content-encoding: gzip
Urjo.com logical thinking challenges
Each line requires 2 red and 2 blue spots. Select blue.
2
4
Correct
Each line has 2 red and 2 blue spots
Incorrect
There are lines with 3 red and 1 blue spots
3
Correct
Red number 3 has exactly 3 red spots around it
3
Incorrect
Blue number 3 has 4 blue spots around it
Correct
Adjacent lines are different
Incorrect
There are identical lines next to each other