MTH104 Quiz 1 by Iqra Azhar

Let A = {1, 2, 4}, and let R be a relation on A defined by “x divides y”, written x|y. Then _________________

R = { (1, 2), (1, 4), (2, 2), (2, 4), (4, 4)} R = {(1, 1), (1, 2), (1, 4), (2, 2), (2, 4), (4, 4) }R = {(1, 1), (1, 2), (1, 4), (2, 4) none R = {(1, 1), (1, 2), (1, 4), (2, 2), (2, 4), (4, 4)}

A relation R on a set A is symmetric if whenever a R b and b R c then a R c, that is, if whenever (a, b) ϵ R, and (b, c) ϵ R, then (a, c) ϵ R.

Given statement is false .Given statement is true.

Leta=2^3.5^2.7^3andb=2^5.3^4.5^6.11^2.Findlcm(a,b).

None lcm(a,b)=2^5.3^4.5^6.7^3.11^2 lcm(a,b)=2^3.5^2.3^4.73.11^2 lcm(a,b)=2^3.5^2