Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

9th February 2001

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

1
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 40. Work out y when x = 11.
2
Vectors3 marks
a is the column vector (2, 3) and b is (3, 1). Work out 5a - 5b as a column vector.
3
Probability Trees3 marks
7 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Capture Recapture2 marks
A capture-recapture estimate is made of the newt population of a stream. State one assumption the method relies on.
5
Surds2 marks
Write sqrt(27) in the form a sqrt(b), where b is as small as possible.

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