Practice eju-math-course-1 questions with answers and explanations.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (13 + 18 + 6 + 31)/4 = 17.
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Use combinations: C(8,4) = 70.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (6 + 16 + 5 + 22)/4 = 12.25.
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By Vieta’s formula, the sum of the roots is the coefficient of x with sign changed.
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10% of 46 = 4.6.
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Area = 4 × 13 = 52 cm².
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By Vieta’s formula, the sum of the roots is the coefficient of x with sign changed.
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Use combinations: C(7,2) = 21.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (16 + 14 + 4 + 30)/4 = 16.
