Daily Practice

Higher

13th June 1982

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 9, y = 12. Work out y when x = 4.
2
Vectors3 marks
a is the column vector (-1, 4) and b is (3, -1). Work out 2a - 2b as a column vector.
3
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.
4
Box Plots2 marks
A box plot has a minimum of 13 and a maximum of 40. Work out the range.
5
Standard Form3 marks
Work out (18 x 10^11) / (9 x 10^4). Give your answer in standard form.

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