Question

Write the set in Roaster Form:

(c) $\{X:X\text{is a letter in the word 'SCHOOL'}\}.$

Answer 1

Steps: Writing the set in Roaster Form

The Letters in the word $\text{SCHOOL are S,C,H,O,O,L}$.

​But a letter should be written only once in a set.​

​We use lowercase for elements while writing in set.​

​Hence, the roster form of given set is $\{s,c,h,o,l\}$.