Daily Practice

Higher

8th June 1973

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

1
Probability Trees3 marks
1 of 5 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 beetle population of a woodland. State one assumption the method relies on.
3
Bounds2 marks
A mass is 11.4 kg, correct to 1 decimal place. Write down the lower bound.
4
Factorising Harder Quadratics3 marks
Factorise 20x^2 - 21x - 5.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 6, y = 66. Work out y when x = 5.

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