Daily Practice

Higher

21st September 1985

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

1
Probability Trees3 marks
5 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 14, lower quartile 16, median 23, upper quartile 33 and maximum 41. Work out the interquartile range.
3
Bounds2 marks
A mass is 240 kg, correct to the nearest 10. Write down the upper bound.
4
Equation of a Line3 marks
A line has gradient -3 and passes through (1, 1). Work out its equation.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 45. Work out y when x = 6.

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