Daily Practice

Higher

20th December 1987

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

1
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 2, y = 15. Work out y when x = 3.
2
Vectors3 marks
a is the column vector (5, 5) and b is (-4, -3). Work out 2a - 2b as a column vector.
3
Probability Trees3 marks
4 of 9 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 35. Work out the range.
5
Fractional and Negative Indices2 marks
Write 5^-2 as a fraction.

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