Daily Practice

Higher

8th March 1986

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

1
Probability Trees3 marks
5 of 10 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 9, lower quartile 12, median 17, upper quartile 26 and maximum 33. Work out the interquartile range.
3
Standard Form3 marks
Work out (8 x 10^12) / (4 x 10^3). Give your answer in standard form.
4
Factorising Harder Quadratics3 marks
Factorise 9x^2 + 12x - 5.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 12. Work out y when x = 6.

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