exam Maths Puzzle Numerical Ability

evaluate:

Log7 1/49 (Log of 7. Not the normal 10)



Thanks!

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exam Other Question
Solve the following quadratic equation by completing the square:

x^2 - 6x - 3 = 0 How many pints of a 9% cleaning solution must be mixed with 10 pints of a 13%
cleaning solution to give a 11% solution?