Daily Practice

Higher

18th November 1974

5 questions · 13 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
5 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 108 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Bounds2 marks
A mass is 11.7 kg, correct to 1 decimal place. Write down the lower bound.
4
Factorising Harder Quadratics3 marks
Factorise 15x^2 + 43x + 30.
5
Repeated Percentage Change3 marks
A price rises by 20% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.

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