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Maths Puzzle
Numerical Ability
log6(b2 + 2) + log62 = 2
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2) Use the geometric sequence of numbers 1, 3, 9, 27, … to find the following:
a) What is r, the ratio between 2 consecutive terms?
Answer:
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RE: permutations & combinations
(Bostock & Chandler "Pure Mathematics", Exercise 15e, question 12)
A box contains 10 bricks identical except for colour.
3 red, 2 white, 2 ye