exam Maths Puzzle Numerical Ability

page 464, problem number 17. everyday you save two pennies more than you saved the day before. one the first day you saved one penny. how many pennies would you have after 100 days?

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exam Other Question

Find a in terms of b, given that
log4(a b2) = 3
Note that, in validating your answer, Maple may display your answer in a slightly different (but nevertheless equivalent) form to what you might expect. A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400 ft2, what is the width of the path? Give your answer in decimal form, rounded to the nearest thousandth.