# math puzzles .. =) xD know em?

1) What is the missing number in the following sequence ? (explain why)

3 7 15 __ 63 127

2) If a teenager and a half can eat a pizza and a half in a day and a half, how many pizzas can a dozen

teenagers eat in three days?

3) You have 12 coins, one of which is counterfeit and weighs less than the legal coins. How can you use a

simple balance 3 times to determine which coin is counterfeit?

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