Daily Practice

Higher

25th September 1985

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

1
Speed and Density2 marks
A block has volume 120 cm^3 and density 11 g/cm^3. Work out its mass.
2
Vectors3 marks
a is the column vector (-1, 4) and b is (2, 4). Work out 5a - 3b as a column vector.
3
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
Four classes in order have frequencies 5, 7, 9, 10. Write down the cumulative frequency at the end of the third class.
5
Fractional and Negative Indices3 marks
Work out 125^(2/3).

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