Daily Practice

Higher

14th February 1972

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

1
Probability Trees3 marks
3 of 9 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 196 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Fractional and Negative Indices3 marks
Work out 16^(3/2).
4
Factorising Harder Quadratics3 marks
Factorise 15x^2 + 11x - 12.
5
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.

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