exam Maths Puzzle Numerical Ability

how do i find the base and exponent of 117649?

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exam Other Question

Sean tells perspective clients that the probability of rain at the dive location is .2 each day. Which expression can be used to calculate the probability that it will rain on exactly 5 days of the 7 days at the dive location?
An alloy of metals is 25% copper another alloy is 50% copper. How much of each alloy is used to make 1000 grams of an alloy with 45% copper.
Can you help us write this equations?