Being responsible online means strong passwords, keeping private information private, checking before sharing and using AI tools honestly.
| The five password rules | at least 8 characters; a capital letter; a small letter; a digit; a symbol such as # or @ |
| Sharing in rounds (k people each) | k + k2 + k3 + … (3 rounds of 4: 4 + 16 + 64 = 84) |
| Weekly screen time | 5 × school-day minutes + 2 × weekend-day minutes |
| Upsetting message or stranger | do not reply; tell a trusted adult |
(a) A website asks for passwords with: at least 8 characters; a capital letter; a small letter; a digit; a symbol such as # or @. How many of these five rules does the made-up password MANGORIV meet?
(b) A child shares a photo with 5 friends. Each of them shares it with 5 new people, and so on, for 4 rounds of sharing in all. How many people (not counting the child) have received the photo?
Working: (a) length 8; has capital, no small letter, no digit, no symbol; (b) 5 + 25 + 125 + 625: once shared, a post is hard to take back
Answer: (a) 2; (b) 780