Permutations & Combinations
Dictionary Order — Serial Number of THAMS
nta_pyq_2023_apr
Grade 11

Question:

Letters of MATHS permuted in dictionary order. Serial number of THAMS is
103
102
101
104

Step-by-Step Solution

Key Concept: Alphabetical order of MATHS: A,H,M,S,T. Count words before THAMS.
Serial number $=103$.
Correct Answer: 1

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