Daily Practice

Higher

22nd June 1962

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

1
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 36. Work out y when x = 5.
2
Vectors3 marks
a is the column vector (-2, -6) and b is (-6, 4). Work out 5a - 2b as a column vector.
3
Probability Trees3 marks
3 of 5 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture2 marks
A capture-recapture estimate is made of the ladybird population of a garden. State one assumption the method relies on.
5
Bounds2 marks
A mass is 110 kg, correct to the nearest 10. Write down the lower bound.

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