Daily Practice

Higher

18th August 1980

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

1
Probability Trees3 marks
2 of 6 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 76 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Surds2 marks
Write sqrt(27) in the form a sqrt(b), where b is as small as possible.
4
Simultaneous Equations3 marks
3 teas and 1 cake cost £10.00. 2 teas and 3 cakes cost £13.90. Find the price of a tea.
5
Repeated Percentage Change3 marks
A price rises by 25% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.

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