Daily Practice · Higher

Daily Practice - Higher

21st September 1995

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

1
Repeated Percentage Change3 marks
A town's population is 31000 and grows by 6% each year. Work out the population after 4 years, to the nearest whole number.
2
Vectors3 marks
a is the column vector (-4, -2) and b is (5, 3). Work out 3a - 2b as a column vector.
3
Probability Trees3 marks
1 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Histograms2 marks
A histogram class is 4 units wide and contains 12 values. Work out the frequency density.
5
Bounds2 marks
A mass is 640 kg, correct to the nearest 10. Write down the lower bound.

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