Represent the following sets in Roster form.
(i) A = The set of all even natural numbers less than 20.
(ii) B = {y : y = 2n
1 , n ! N, n ≤ 5}
(iii) C = {x : x is perfect cube, 27 < x < 216}
(iv) D = {x : x ! Z, –5 < x ≤ 2}
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Solution:-
given by:- (i) A = The set of all even natural numbers less than 20.
A = { 2 ,4,6,8,10,12,14,16,18,} ans
= A = {x:x is even natural number x > 20} ans
(ii) B = {y : y = 2n
1 , n ! N, n ≤ 5}
= B ={ 1 , 2 , 6 , 24 , 120} ans
(iii) C = {x : x is perfect cube, 27 < x < 216}
= C ={ , 4^3 , 5^3 , } ans
(iv) D = {x : x ! Z, –5 < x ≤ 2}
= D = {-4,-3,-2,-1,0,1,2} ans
☆i hope its help☆
given by:- (i) A = The set of all even natural numbers less than 20.
A = { 2 ,4,6,8,10,12,14,16,18,} ans
= A = {x:x is even natural number x > 20} ans
(ii) B = {y : y = 2n
1 , n ! N, n ≤ 5}
= B ={ 1 , 2 , 6 , 24 , 120} ans
(iii) C = {x : x is perfect cube, 27 < x < 216}
= C ={ , 4^3 , 5^3 , } ans
(iv) D = {x : x ! Z, –5 < x ≤ 2}
= D = {-4,-3,-2,-1,0,1,2} ans
☆i hope its help☆
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