Which of the following sets are equal? X={x : x is letter of word LIFE}, Y={x : x is letter of the word WIFE}, Z={x : x is letter of the word FILE}

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Question:Which of the following sets are equal? X={x : x is letter of word LIFE}, Y={x : x is letter of the word WIFE}, Z={x : x is letter of the word FILE}

1.X and Y

2.Y and Z

3.X and Z

4.X, Y and Z

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  1. Which of the following sets are equal? X={x : x is letter of word LIFE}, Y={x : x is letter of the word WIFE}, Z={x : x is letter of the word FILE}
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