Practice eju-math-course-1 questions with answers and explanations.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (15 + 4 + 10 + 19)/4 = 12.
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Use combinations: C(8,2) = 28.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (8 + 21 + 9 + 29)/4 = 16.75.
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f(7)=2×7+3=17.
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10% of 30 = 3.
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Area = 6 × 18 = 108 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(7,3) = 35.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (18 + 19 + 8 + 37)/4 = 20.50.
