Daily Practice

Higher

9th January 1988

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

1
Probability Trees3 marks
4 of 9 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 15, lower quartile 20, median 24, upper quartile 26 and maximum 32. Work out the interquartile range.
3
Fractional and Negative Indices3 marks
Work out 16^(3/2).
4
Factorising Harder Quadratics3 marks
Factorise 4x^2 + 25x + 6.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 81. Work out y when x = 4.

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