Daily Practice

Higher

19th October 1988

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

1
Reverse Percentages3 marks
A bill is £648 including VAT at 20%. Work out the amount before VAT.
2
Trigonometric and Exponential Graphs2 marks
The curve y = 3^x is drawn. Work out y when x = 4, and write down where the curve crosses the y-axis.
3
Speed and Density2 marks
A block has volume 70 cm^3 and density 11 g/cm^3. Work out its mass.
4
Vectors3 marks
a is the column vector (-1, 5) and b is (2, 2). Work out 5a - 4b as a column vector.
5
Probability Trees3 marks
3 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.

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