This question appeared during the Primary School Leaving Examination 2019. It shocked 12-year-old kids and got anxious parents all fired up.
For a money question, you may visit my blog.
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This question appeared during the Primary School Leaving Examination 2019. It shocked 12-year-old kids and got anxious parents all fired up.
For a money question, you may visit my blog.
3d+2×12 = 2d +16+2×22 | - 2d - 24 3d+2×12 - 2d - 24 = 2d +16 + 44 - 2d - 24 d = 36
Well done!
Diameter is 16 + 10 + 10?
Yes! Great job
I can understand why some 12-year-olds would get stressed having to solve one of these. The math isn't complicated, but it's about having the right insight when time is of the essence. Reminds me of the Math Olympiads when I was 16 or so... a bit more maturity at the time than a 12-year old, but still, very stressful.
Wow! You represented South Korea? Impressive