Daily Practice

Higher

12th August 1988

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

1
Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
3
Bounds2 marks
A mass is 10 kg, correct to the nearest whole number. Write down the upper bound.
4
Equation of a Line3 marks
A line has gradient -1 and passes through (5, -3). Work out its equation.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 9, y = 45. Work out y when x = 11.

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