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matrixoz1262
05.08.2019 •
Mathematics
Let the universal set, s, have 203 elements. a and b are subsets of s. set a contains 98 elements and set b contains 81 elements. if the total number of elements in either a or b is 173, how many elements are in a but not in b?
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Ответ:
There are 92 elements in A but not in B.
Step-by-step explanation:
Since we have given that
n(S) = 203
n(A) = 98
n(B) = 81
n(A∪ B) = 173
We first find the value of n(A∩B).
We need to find the number of elements that are in A but not in B.
Hence, there are 92 elements in A but not in B.
Ответ:
92
Step-by-step explanation:
it is given that total number of elements =203
set A contains 98 that is A=98
set B contain 81 elements B=81
It is given that either A or B is 173
we know the formula
173=98+81 -![n\left ( A\cap B \right )](/tpl/images/0171/7664/b20db.png)
so the elements in A but not B =98-6=92
Ответ:
I think its B
Step-by-step explanation: