exam Maths Puzzle Numerical Ability

how many permutations are there of the letters in the word "distinction"?

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exam Other Question

I do not understand this?

Express 50(ten) in binary, trinary and base 4.

thankyou Danielle A rectangle is 10m longer than it is wide.If its length and width are both decreased by 2 m,its area is decreased by 48 m squared.Find its original dimensions.