Daily Practice

Higher

25th March 1961

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Conditional Probability3 marks
23 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Box Plots2 marks
A box plot has minimum 11, lower quartile 15, median 21, upper quartile 29 and maximum 36. Work out the interquartile range.
3
The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
4
Solving Quadratics3 marks
Solve x^2 - 3x - 18 = 0.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 288. Work out y when x = 9.

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