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What is the LCM of 4 and 6?
How many ways can 4 people be arranged in a line?
What is the value of i² where i is the imaginary unit?
A pipe fills a tank in 6 hours another empties it in 8 hours. Both open: how long to fill?
If f(x) = 2x² + 3x - 5 what is f(2)?
What is the probability of getting a head when a fair coin is tossed?
What does a radian measure?
Find the roots of x² - 5x + 6 = 0
A shopkeeper buys an item for Rs 200 and sells it for Rs 250. What is the profit percentage?
What is the equation of a circle centered at origin with radius r?