Practice Japan questions with answers and explanations.
Choose an option to check your answer.
Area = 2 × 8 = 16 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(7,4) = 35.
Choose an option to check your answer.
Probability = favourable outcomes ÷ total outcomes.
Choose an option to check your answer.
Mean = (14 + 9 + 11 + 23)/4 = 14.25.
Choose an option to check your answer.
f(7)=4×7+8=36.
Choose an option to check your answer.
10% of 30 = 3.
Choose an option to check your answer.
f(7)=6×7+10=52.
Choose an option to check your answer.
10% of 34 = 3.4.
Choose an option to check your answer.
Area = 12 × 6 = 72 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(6,2) = 15.
