Daily Practice

Foundation Plus

24th May 1972

5 questions · 12 marks · Grades 4-6 · 128 question types in this band

1
Percentages2 marks
Work out 15% of 40.
2
Vectors2 marks
a is the column vector (0, 1) and b is (6, -7). Work out a + b as a column vector.
3
Probability Trees3 marks
2 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture3 marks
50 beetles are marked and released. Later 32 are caught, of which 4 are marked. Estimate the population.
5
Error Intervals2 marks
A number y is 52 when truncated to the nearest whole number. Write down the error interval for y.

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