IPMAT 2022 - Quantitative Aptitude Question 39
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IPMAT 2022 - Quantitative Aptitude
A × B has 4 elements
Then A has 2 elements & B has 2 elements
Because 2 values of A × B have different value for B
So elements of B are = {1, 4}
Then elements of A are = {1, 4}
Then A × B = {(1, 1), (1, 4), (4, 1), (4, 4)}
And B × A = {(1, 1), (1, 4), (4, 1), (4, 4)}
Hence A × B = B × A