I like those kind of things, did a lot of them at uni on my course. The bird in the bush one ALWAYS works, ive tried it on loads of people. You just need to draw a triangle and write it in and it drives people mad.
Ah yes that reminds me of something...not a puzzle, but interesting nonetheless . Its called Chocolate numbers.
1) Pick number of times you want chocolate a week (more than 1 less than 10)
2) Times that by 2.
3) Add 5.
4) Multiply by 50.
5) If you had your birthday this year add 1756.
6) If you have NOT had your birthday add 1755.
7) Subtract 4 digit year you were born.
and it should come up with the number you started with and your age .
Sorry to hijack this thread a bit, but didnt wanna start a new thread on it
well I got the last three, but then I was looking for them after the first three
frustrating bit was that I was looking for it on the 3rd one & still didn't see the 'illusion' part.
That was fun & the dot one, loved that
Wonder if I can catch my daughter out, she's a bl**dy genius so should be fun to find out.
Bugga bugga bugga!!!! She got all of them except the last one where she was one short.
I'm not sure if I should be proud of her or strangle her
Maybe I'll do both
Edit: Just tried her on the wall & she said "there are no black dots & there are as many black dots as there are white dots since they keep jumping around" Now that's just not fair.