Daily Practice · Higher

Daily Practice - Higher

12th November 1995

5 questions · 15 marks · Grades 6-7 · 61 question types in this band

1
The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 4 digits (0 to 9), and repeats are allowed. How many codes are possible?
2
Factorising Harder Quadratics3 marks
Factorise 2x^2 + 7x + 6.
3
Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 9, y = 10. Work out y when x = 2.
4
Spheres and Cones3 marks
A sphere has radius 15 cm. Work out its volume, leaving your answer in terms of pi.
5
Probability Trees3 marks
3 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.

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