Is 3 ! + 4 ! = 7 ! ?

Solution:

Using the definition of factorial,
7! = 7×6×5×4×3×2×1 = 5040
4! = 4×3×2×1 = 24
3! = 3×2×1 = 6

Now, 3! + 4! = 6 + 24 = 30

Therefore, 3 ! + 4 ! ≠ 7 !

NCERT Solutions Class 11 Maths Chapter 7 Exercise 7.2 Question 2

Is 3 ! + 4 ! = 7 !?

Summary:

Using the factorial definition, we verified that 3! + 4! is not equal to 7!