GATE | GATE-CS-2004 | Question 72
The following is the incomplete operation table a 4-element group.
The last row of the table is
(A) c a e b
(B) c b a e
(C) c b e a
(D) c e a b
Explanation: It is given that the given set of 4 elements is group.
The element ‘e’ is clearly identity as the row corresponding to it has all values same as the other operand. Also, since a*c is e, c*a should also be e which is only the case in option D
Quiz of this Question
Attention reader! Don’t stop learning now. Practice GATE exam well before the actual exam with the subject-wise and overall quizzes available in GATE Test Series Course.
Learn all GATE CS concepts with Free Live Classes on our youtube channel.