Practice eju-math-course-1 questions with answers and explanations.
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Mean = (11 + 13 + 2 + 24)/4 = 12.50.
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f(7)=2×7+6=20.
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Area = 2 × 8 = 16 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(7,4) = 35.
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Probability = favourable outcomes ÷ total outcomes.
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Mean = (14 + 9 + 11 + 23)/4 = 14.25.
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f(7)=4×7+8=36.
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10% of 30 = 3.
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Area = 9 × 10 = 90 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(8,3) = 56.
