Daily Practice · Higher

Daily Practice - Higher

8th June 1992

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

1
Repeated Percentage Change3 marks
A price rises by 10% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
2
Vectors3 marks
a is the column vector (-4, 0) and b is (-5, 0). Work out 5a - 3b as a column vector.
3
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.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 172 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Surds2 marks
Write sqrt(72) in the form a sqrt(b), where b is as small as possible.

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