Mathematics
Given that A = {2, 5, 7, 8, 10}, B = {5, 7, 2, x, 10} and A = B, write the value of x.
Sets
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Answer
A = {2, 5, 7, 8, 10}
B = {5, 7, 2, x, 10}
Since A = B, both sets must have exactly the same elements.
The elements 5, 7, 2 and 10 are common to both sets.
The remaining element in A is 8, which must also be present in B.
So, x = 8.
Hence, x = 8.
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