railway RRB Technician Grade 1 Mock Test 2024 Mathematics Sets Operations on Sets

যদি P এবং Z দুটি সেট হয় যেমন n(P) = 23, n(Z) = 29 এবং n(PUZ) = 42 তাহলে n(P ∩ Z) নির্ণয় করুন।

1
14
2
10
3
8
4
12
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