exam Maths Puzzle Numerical Ability

Find the following product.

(x - 9)(x - 8)

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exam Other Question

Please help me to solve with the calculator to four places

16.) log x - 2.0832

17.) ln x = -1.1577 How do I solve this problem? Can You discover the lodgical pattern for each number sequence below and therby discover the missing number(shown by dash)?
FOR EXAMPLE