5. In the ring (Mat,x2(Z), +,.), if A € Matzx2(Z) then the ideal (A) = (a) {B. A: BE Matzx2(Z)} (b) {B. A + n. A: BE Matzx2 (Z) and n e Z} (c) Matzx2(Z) (d) No Choice (a) (b) (c) O (d) 6. In the ring (Z99, +90,-90 ), the ideal (10) n (15) = (a) (80) (b) (75) (c) (60) (d) No Choice
5. In the ring (Mat,x2(Z), +,.), if A € Matzx2(Z) then the ideal (A) = (a) {B. A: BE Matzx2(Z)} (b) {B. A + n. A: BE Matzx2 (Z) and n e Z} (c) Matzx2(Z) (d) No Choice (a) (b) (c) O (d) 6. In the ring (Z99, +90,-90 ), the ideal (10) n (15) = (a) (80) (b) (75) (c) (60) (d) No Choice
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:5. In the ring (Mat,x2(Z), +,.), if A € Matzx2(Z) then the ideal (A) =
(a) {B. A: B E Mat,x2 (Z)}
(b) {B. A + n. A:BE Mat2x2(Z) and n e Z}
(c) Matzx2(Z)
(d) No Choice
(a) O
(b)
(c) O
(d) O
6. In the ring (Z90, +90,.90 ), the ideal (10) n (15)% =
(a) (80)
(b) (75)
(c) (60)
(d) No Choice
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