Aspire Faculty ID #15115 · Topic: JAMIA MILLIA ISLAMIA MCA 2018 · Just now
JAMIA MILLIA ISLAMIA MCA 2018

In the group G = {2, 4, 6, 8} under multiplication modulo 10, the identity element is

Solution

$(a × e) \bmod 10 = a.$ For $e=6$, $2×6=12\equiv2,\ 4×6=24\equiv4,\ 8×6=48\equiv8.$
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