List all the elements of the following sets: (i) E = {x : x is a month of a year not having 31 days} (ii) F={x : x is a letter of the word “MISSISSIPPI”}

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List all the elements of the following sets: (i) E = {x : x is a month of a year not having 31 days} (ii) F={x : x is a letter of the word “MISSISSIPPI”}

Answers:

(i) E = {x : x is a month of a year not having 31 days}

The months may have 28, 29, 30, 31 days.

Months having 31 days are February, April, June, September, November.

∴ E: {February, April, June, September, November}

(ii)

Repetition of letters are not allowed.

Then, the letters in word ‘MISSISSIPPI’ are M, I, S, P.

∴ F = {M, I, S, P}.