Daily Practice

Higher

18th January 1987

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

1
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 7, y = 60. Work out y when x = 10.
2
Vectors3 marks
a is the column vector (-6, 1) and b is (-6, -3). Work out 5a - 5b as a column vector.
3
Probability Trees3 marks
2 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Box Plots2 marks
A box plot has a minimum of 17 and a maximum of 44. Work out the range.
5
Bounds2 marks
A mass is 620 kg, correct to the nearest 10. Write down the lower bound.

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