exam Maths Puzzle Numerical Ability

[2 + 1/(1-1/t)] / [ 2 - (3/1-1/t)]

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exam Other Question

Can someone help on this problem?

List the factors of the number 27.

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Ashley It is estimated that at the present rate of deforestation in El Salvador, in 20 years only 53% of the present forest will remain. How long will it take to remove 95% of the forest?