Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,247

Post composite numbers and say something about it:

Mine:

52-number of cards in a deck

Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

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**anonimnystefy****Real Member**- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,016

4-the smallest composite number.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

The knowledge of some things as a function of age is a delta function.

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**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,247

Wow!

Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

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