Qus : 1 Delhi University MCA PYQ 3

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1 (a)
2 (b)
3 (c)
4 (d)
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Delhi University MCA Previous Year PYQ Delhi University MCA DU MCA 2021 PYQ

Qus : 2 Delhi University MCA PYQ 4

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1 (a) The set of all units in R is {(1,1), (1,5), (3,1), (3,5)}
2  The set of all nilpotent elements in R is {(0,0), (0,2)}
3 The total number of zero-divisors in R is 28
4 The set of zero-divisors is $\{(a,b) : a = 0,2 \text{ and } b = 0,2,3,4\}$
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Delhi University MCA Previous Year PYQ Delhi University MCA DU MCA 2021 PYQ

Qus : 3 Delhi University MCA PYQ 2

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2 (b)
3 (c)
4 (d)
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Delhi University MCA Previous Year PYQ Delhi University MCA DU MCA 2020 PYQ

[{"qus_id":"9862","year":"2020"},{"qus_id":"11098","year":"2021"},{"qus_id":"11102","year":"2021"}]