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

यदि P और Z दो समुच्चय इस प्रकार हैं कि n(P) = 23, n(Z) = 29 और n(PUZ) = 42 है, तो n(P ∩ Z) ज्ञात करें।

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