Teaching UP TGT Mock Test Series 2025 Mathematics Sets Set Theory and types of Sets

यदि A = {x : x ∈ N और x ≤ 5} और B = {y : y ∈ R और y2 + y - 2 = 0} तो निम्न में से कौन सा सत्य है?

1
n(A) = n(B)
2
n(A) < n(B)
3
n(A) ≤ n(B)
4
n(A) > n(B)
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