Daily Practice
Higher
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20th June 1990
- 1Circle Theorems2 marks
ABCD is a cyclic quadrilateral. Angle ABC is 114°. Work out angle ADC.
- 2Probability Trees3 marks
A bag holds 3 red and 8 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Cumulative Frequency2 marks
Four classes in order have frequencies 12, 12, 8, 9. Write down the cumulative frequency at the end of the third class.
- 4Fractional and Negative Indices2 marks
Write 3^-3 as a fraction.
- 5Changing the Subject of a Formula3 marks
Make x the subject of y = 9x^2 - 12.
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