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o-na [289]
3 years ago
9

23 girls have a mean height of 153cm

Mathematics
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

Mean height of 159

Step-by-step explanation:

Add 153 and 165, then divide by 2 to find the average of 159.

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A. The number of possible ways can this be done, if the order of the choices is not taken into consideration is 1, 287 ways

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<h3>What is meant by permutation and combination?</h3>

Combination and permutation are two alternative strategies in mathematics to divide up a collection of components into subsets. The subset's components can be listed in any order when combined. The components of the subset are listed in a permutation in a certain order.

A. We want to select 5 objects from a total 13, without considering the order in which they are chosen.

The correct way to do this exists by utilizing the combination formula since order exists not considered;

Therefore, we have ; 13 C 5 read as 13 combination 5;

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substituting the values in the above equation, we get

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B. By considering order, we shall be using the permutation formula;

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substituting the values in the above equation, we get

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