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RE: Maths Brain Teasers 66:: Can You Complete The Pie???

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science.tech (29)in STEMGeeks • 4 years ago

Each time we add opposite numbers we get the same number which is 21, so if we add 15 + ? we must get 21, so the should replace the question mark by 6

4 years ago in STEMGeeks by science.tech (29)
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