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Solution:
Using the definition of factorial, 8! can be written ad 8 × 7 × 6!. Thus,
8!/(6!×2!)
= (8 × 7 × 6!) / (6!×2!)
= (8 × 7) / (2 × 1)
= 4 × 7
= 28
NCERT Solutions Class 11 Maths Chapter 7 Exercise 7.2 Question 3
Summary:
Using the concept of factorials, 8! / (6! × 2!) = 28