How many sets are there in the TNPSC Group 4 Question paper?
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1 Answer
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The Tamil Nadu Public Service Commission conducted the TNPSC Group 4 exam 2025 on July 12, 2025 at the designated exam centres. The paper was conducted offline where the candidates were required to mark their answers on the OMR sheet provided by the Commission.
The Commission prepared four sets of question paper having identical questions but at different serial number. The candidates were distributed these question papers as per the seating plan prepared and approved by the local exam designated authority.
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n P (A) = 27 = 128

f : A → B
Number of function = 128 × 128….128 = 1287
->mn = 249
m + n = 49 + 2 = 51
n (C) = 16, n (P) = 20, n (M) = 25
n (MÇP) = n (MÇC) = 15, n (PÇC) = 10,
n (MÇCÇP) = x.
n (CÈPÈM) £ n (U) = 40
n (CÈPÈM) = n (C) + n (P) + n (M) – n (C? M) – n (PÈM) – n (CÇP) + n (CÇPÇM)
40 ³ 16 + 20 + 25 – 15 – 15 – 10 + x
40 ³ 61 – 40 + x
19 ³ x
So maximum number of students that passed all the exams is 19.
Let
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two real values of x
The different types of sets covered in this chapter are - Empty Set, Singleton Set, Finite Set, Infinite Set, Equal Sets, Equivalent Sets, Subset, Proper Subset, Universal Set, Power Set, and Disjoint Sets.
Union (? ) in sets means "or". It gives a set of all unique elements of two or more sets. Intersection (? ) means "and". It includes all the common elements of two or more sets.
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