Daily Practice · Higher Plus

Daily Practice - Higher Plus

19th April 1992

5 questions · 14 marks · Grades 8-9 · 51 question types in this band

1
Bounds3 marks
x = 199 and y = 63, each correct to the nearest whole number. Work out the upper bound of x - y.
2
Proof2 marks
In an algebraic proof, how would you write a multiple of 7 in terms of an integer n?
3
Direct and Inverse Proportion Depth3 marks
y is directly proportional to sqrt(x). When x = 4, y = 16. Work out y when x = 81.
4
Vectors Proof Questions3 marks
OACB is a parallelogram with vector OA = b and vector OB = a. N is the point dividing AB in the ratio 3 : 1. Write vector ON in terms of b and a.
5
Probability Equation Questions3 marks
The probability of winning a game is 1/10. A player expects 7 wins. How many games did they play?

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