Daily Practice

Higher

14th September 1968

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

1
Probability Trees3 marks
2 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 4, lower quartile 8, median 18, upper quartile 22 and maximum 26. Work out the interquartile range.
3
Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
4
Factorising Harder Quadratics3 marks
Factorise 5x^2 + 31x + 6.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 5, y = 150. Work out y when x = 3.

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