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A number x is chosen at random from the numbers -3, -2, -1, 0 1, 2, 3. What is the probability that |x| < 2 (Ans: 3/7 )
Ans : x can take 7 values
To get |x| <2 take -1, 0, 1
Probability (| x | < 2) = 3/7
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1+2cos(2x=0
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