Daily Practice

Higher

1st July 1987

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 7, 4, 10, 12. Write down the cumulative frequency at the end of the third class.
3
Surds2 marks
Write sqrt(48) in the form a sqrt(b), where b is as small as possible.
4
Factorising Harder Quadratics3 marks
Factorise 12x^2 - 31x + 20.
5
Speed and Density2 marks
A block has volume 195 cm^3 and density 11 g/cm^3. Work out its mass.

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