Daily Practice · Higher

Daily Practice - Higher

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

6th January 2000

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
1 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Histograms2 marks
A histogram class is 10 units wide and contains 20 values. Work out the frequency density.
3
Fractional and Negative Indices2 marks
Write 7^-1 as a fraction.
4
Trigonometric and Exponential Graphs2 marks
The curve y = 2^x is drawn. Work out y when x = 1, and write down where the curve crosses the y-axis.
5
Repeated Percentage Change3 marks
A town's population is 12500 and grows by 4% each year. Work out the population after 2 years, to the nearest whole number.

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