Daily Practice

Higher

9th July 1990

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

1
Probability Trees3 marks
1 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 152 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Standard Form3 marks
Work out (30 x 10^9) / (6 x 10^4). Give your answer in standard form.
4
Factorising Harder Quadratics3 marks
Factorise 6x^2 - x - 15.
5
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.

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