Daily Practice

Higher

18th May 1977

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

1
Probability Trees3 marks
4 of 6 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 12, 3, 12, 8. Write down the cumulative frequency at the end of the third class.
3
Surds2 marks
Write sqrt(45) in the form a sqrt(b), where b is as small as possible.
4
Factorising Harder Quadratics3 marks
Factorise 8x^2 + 2x - 1.
5
Speed and Density2 marks
A block has volume 60 cm^3 and density 7.5 g/cm^3. Work out its mass.

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