Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

21st February 1998

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

1
Probability Trees3 marks
3 of 5 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 15, median 18, upper quartile 28 and maximum 32. Work out the interquartile range.
3
Fractional and Negative Indices3 marks
Work out 27^(2/3).
4
Factorising Harder Quadratics3 marks
Factorise 12x^2 - x - 6.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 8. Work out y when x = 8.

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