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प्रश्न
Are the following pair of sets equal? Give reasons.
A = {x : x is a letter in the word FOLLOW};
B = {y : y is a letter in the word WOLF}
उत्तर
A = {x : x is a letter in the word FOLLOW} = {F, O, L, W}
B = {y : y is a letter in the word WOLF} = {W, O, L, F}
The order in which the elements of a set are listed is not significant.
∴ A = B = {F, O, L, W}.
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