What's my number?
I’m thinking of a number.
I get the same answer if I add 8 to my number, or if I don’t
add 8 but instead I triple my number.
What number am I thinking of?
1. Try your own number. Triple it and what do you get? Add 8 to your
number and what do you get?
2. How close was your own number? Would it have been better to try a
bigger or a smaller value?
3. Try another number that is likely to give the same answer when it is
tripled as when 8 is added.
4. Did that work? If not, try again with a number that is likely to be closer.