exam Maths Puzzle Numerical Ability

Find s_8 , the sixth term in the series corresponding to the arithmetic sequence which has a = 5 and d = 2.

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exam Other Question

Please help me solve this logarithm problem.

log base 1/6(x^2+x)-log base 1/6(x^2-x)= -1

I know since the bases are the same at the first of the problem I can condense the pr what is the surface area of a cilynder with a diameter 12 inches and height of 8 inches? use 3.14 for pie