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What is the result of 7^2 - 4^2?

A. 33
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What is the sum of the first 10 positive integers?

C. 55
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If x = 5, what is the value of 3x^2 - 2x + 1?

A. 66
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What is the least common multiple (LCM) of 12 and 15?

A. 60
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Which of the following numbers is a prime number?

B. 29
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