Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

14th February 2004

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

1
Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 9, lower quartile 11, median 19, upper quartile 27 and maximum 30. Work out the interquartile range.
3
Surds2 marks
Write sqrt(8) in the form a sqrt(b), where b is as small as possible.
4
Equation of a Line3 marks
A line has gradient 5 and passes through (6, 22). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 4, y = 80. Work out y when x = 7.

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