Daily Practice

Higher

4th June 1983

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

1
Probability Trees3 marks
1 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 1, lower quartile 6, median 8, upper quartile 11 and maximum 21. Work out the interquartile range.
3
Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.6666... as a fraction in its simplest form.
4
Factorising Harder Quadratics3 marks
Factorise 15x^2 - 13x - 6.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 252. Work out y when x = 5.

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