Daily Practice · Higher

Daily Practice - Higher

26th December 1995

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

1
Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 2 : 9. Write y in terms of x.
2
Vectors3 marks
a is the column vector (6, 5) and b is (4, 4). Work out 5a - 5b as a column vector.
3
Probability Trees3 marks
1 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
20 beetles are marked and released. Later 28 are caught, of which 7 are marked. Estimate the population.
5
The Product Rule for Counting3 marks
A code is 2 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?

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