Q.2 Examine whether the following statements are true or false:
(i) { a, b } { b, c, a }
(ii) { a, e } { x : x is a vowel in the English alphabet}
(iii) { 1, 2, 3 } { 1, 3, 5 }
(iv) { a } { a, b, c }
(v) { a } { a, b, c }
(vi) { x : x is an even natural number less than 6} { x : x is a natural number which divides 36}
(i) All elements of { a, b } lie in { b, c, a }.So,{ a, b } { b, c, a }.
Hence, it is false.
(ii) All elements of { a, e } lie in {a,e,i,o,u}.
Hence, the statement given is true.
(iii) All elements of { 1, 2, 3 } are not present in { 1, 3, 5 }.
Hence, the statement given is false.
(iv) Element of { a } lies in { a, b, c }.
Hence, the statement is true.
(v). { a } { a, b, c }
So, the statement is false.
(vi) All elements {2,4,} lies in {1,2,3,4,6,9,12,18,36}.
Hence, the statement is true.