Daily Practice

Higher

19th January 1986

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

1
Probability Trees3 marks
3 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 a minimum of 3 and a maximum of 42. Work out the range.
3
Surds2 marks
Write sqrt(98) in the form a sqrt(b), where b is as small as possible.
4
Factorising Harder Quadratics3 marks
Factorise 10x^2 + 19x - 15.
5
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 3, y = 8. Work out y when x = 4.

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