Verify whether or not the following are ideals in the given ring
iii.R is Z6
and I is the set of elements in Z6
ii.R is Z[x] and I is the set of polynomials in Z[x] whose leading coefficient is even
i.R is the ring of rational numbers and I is the setoff non negative rational numbers
of the form Zr6
where r is an even number
6 ars)
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