exam Maths Puzzle Numerical Ability

Simplify:
log(base 2)8 + 3 log(base 3)3 - log(base 2)1 + log(base 4)(1/4)

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exam Other Question

Please help me, I'm struggling!
Find the exact value of:
(1/cos^2 40 degrees)-(1/cot^2 40 degrees)

Thank you for your time, Natalie Evaluate the expression log(base 8)8^5.
Thanks!