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The product 1 times 2 times 3 up to n is written as:

An functional
Bn formational
Cn factorial
Dn fractional
Answer & Solution
Correct answer: C. n factorial
1. The symbol is n with an exclamation mark. 2. It multiplies all whole numbers up to n. 3. It is n factorial. _Source: syllabus Mathematics, Chapter 7, Permutations and Combinations._
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