XEQ 101 BASIC MATHEMATICS - XEQ 101 BASIC MATHEMATICS...

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XEQ 101: BASIC MATHEMATICS QUESTION ONE a) i) Permutation is a way of finding the number of different arrangements or selections which are possible from a set of objects ii) Combination is a selection of a number of objects in which the order of selection does not matter. iii) Independent event refers to choices that can be made on objects not related from one another i.e. distinct from one another. b) i) Number of permutations of the word TRIGONOMETRY Let the letter T be T 1 and T 2 Let the letter O be O 1 and O 2 So we will have 12 different letters Hence 12!/2!2! = 12×11/(2×1)(2×1) = 132/4 = 33 times ii) Number of ways four digit numbers greater than 2000 can be formed using the
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  • Fall '16
  • four digit, distinct permutation

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