Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
24th February 2018
- 1Probability 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.
- 2Box Plots2 marks
A box plot has minimum 14, lower quartile 24, median 33, upper quartile 41 and maximum 43. Work out the interquartile range.
- 3The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?
- 4Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 3, and write down where the curve crosses the y-axis.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 32. Work out y when x = 3.
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