CBSE Class 12-science Answered
Given below is the table corresponding to some binary operation a * b on a set S={0,1,2,3,4,5}. What is 5 -1 from this operation?
*
0
1
2
3
4
5
0
0
1
2
3
4
5
1
1
2
3
4
5
0
2
2
3
4
5
0
1
3
3
4
5
0
1
2
4
4
5
0
1
2
3
5
5
0
1
2
3
4
2
1
4
5
Asked by jay7venture | 14 Sep, 2018, 08:57: PM
Expert Answer
Finding the identity element
for any element, we can see from the table that
a*0=a
so, 0 is identity element
now
a*b=identity, then inverse of a is b
from table
5*1=0
and 1*5=0
so 1 is the inverse of 5
Answered by Arun | 15 Sep, 2018, 12:26: AM
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