Daily Practice

Higher

18th July 1970

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

1
Probability Trees3 marks
2 of 7 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 10, lower quartile 13, median 23, upper quartile 33 and maximum 40. Work out the interquartile range.
3
Bounds2 marks
A mass is 750 kg, correct to the nearest 10. Write down the lower bound.
4
Factorising Harder Quadratics3 marks
Factorise 10x^2 - 11x + 3.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 2, y = 32. Work out y when x = 9.

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