Teaching NVS PGT 2024 Test Series Mathematics Sets Operations on Sets

यदि S1 = {x ϵ R ∶ x2 + | x | - 2 = 0} और S2 = {x ϵ R ∶ x2 + x - 2 = 0}, तब 

1
S1 ∪ S2 में 4 अवयव हैं।
2
S1 ∪ S2 में 2 अवयव हैं।
3
S1 ∩ S में 2 अवयव हैं।
4
S1 ∩ S में 1 अवयव है।
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