Question

i should study hard write down the set of letters in sentence using roster method and set builder method​

Answer 1

We have to write the set of letters in the word "SENTENCE" using roster form and in set builder form.

First the letters in the word SENTENCE are being noted down.

S, E, N, T, C

These 5 letters are used in the word SENTENCE.

Including these letters, we may introduce the set in roster form.

{S, E, N, T, C}

If required, let me write the elements in alphabetical order.

{C, E, N, S, T}

Now we have to write it in set builder notation, it's very easy!

There's nothing, we just show a particular element which is a letter in the word SENTENCE, and it may be,

{x : x is a letter in the word SENTENCE}