exam Maths Puzzle Numerical Ability

using the geometric sequence of numbers 1,1/2,1/4,1/8... to find the following..What is r, the ratio between 2 consecutive terms? show work

using the formula for the sum of the

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23/15 (logBASE5 N+logBASE5 (n+11)) -12/13 logBASE5(n-10) Condense to the logarithm of a single quantity. Solve:

1)The points (1,5), (4,5), and (1,0) represent three corners of a rectangle; find the coordinates of the fourth point.

2)Seven inches are equivalent to 17.78 cm. F