Practice Japan questions with answers and explanations.
Choose an option to check your answer.
Area = 18 × 17 = 306 cm².
Choose an option to check your answer.
By Vieta’s formula, the sum of the roots is the coefficient of x with sign changed.
Choose an option to check your answer.
Use combinations: C(9,3) = 84.
Choose an option to check your answer.
Probability = favourable outcomes ÷ total outcomes.
Choose an option to check your answer.
Use combinations: C(8,4) = 70.
Choose an option to check your answer.
10% of 34 = 3.4.
Choose an option to check your answer.
Area = 11 × 15 = 165 cm².
Choose an option to check your answer.
By Vieta’s formula, the sum of the roots is the coefficient of x with sign changed.
Choose an option to check your answer.
Probability = favourable outcomes ÷ total outcomes.
Choose an option to check your answer.
Mean = (9 + 12 + 3 + 21)/4 = 11.25.
Choose an option to check your answer.
f(7)=6×7+7=49.
Choose an option to check your answer.
10% of 46 = 4.6.
