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Challenge level: Challenge Level:1 Challenge Level:2 Challenge Level:3

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Broad Topics > Numbers and the Number System > Comparing and Ordering numbers

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Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Which is the bigger, 9^10 or 10^9 ? Which is the bigger, 99^100 or 100^99 ?

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Rachel's Problem

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Is it true that $99^n$ has 2n digits and $999^n$ has 3n digits? Investigate!

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Stage: 4 Challenge Level: Challenge Level:1

All the words in the Snowman language consist of exactly seven letters formed from the letters {s, no, wm, an). How many words are there in the Snowman language?