Daily Practice

Higher

14th June 1981

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

1
Probability Trees3 marks
1 of 10 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 a minimum of 19 and a maximum of 35. Work out the range.
3
Reverse Percentages3 marks
A bill is £720 including VAT at 20%. Work out the amount before VAT.
4
Factorising Harder Quadratics3 marks
Factorise 16x^2 + 8x - 15.
5
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 5, y = 18. Work out y when x = 6.

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