Daily Practice
Higher
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13th April 1970
- 1Probability Trees3 marks
1 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 52 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Standard Form3 marks
Work out (10 x 10^8) / (5 x 10^2). Give your answer in standard form.
- 4Factorising Harder Quadratics3 marks
Factorise 16x^2 - 25.
- 5Repeated Percentage Change3 marks
A price rises by 15% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1970, including the monthly compilation PDF.