Daily Practice

Higher

20th May 1972

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 13, lower quartile 23, median 26, upper quartile 33 and maximum 35. Work out the interquartile range.
3
Standard Form2 marks
Work out (8 x 10^7) x (9 x 10^-6). Give your answer in standard form.
4
Factorising Harder Quadratics3 marks
Factorise 8x^2 + 18x + 9.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 80. Work out y when x = 5.

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