How many member countries are a part of UN as of April 2019?

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E6 Comprehensive Textbook of Community Health Nursing for BSc Nursing Students Part 2 — Subpart B (pp 276-535 of 550) p. 207-209
Practise the full DSSSB - 29 August 2019 (Shift-2)
Attempt every question from this paper in a timed mock, then review the full solution for each one.