Varible and constant n+3

n = Variable (because a letter is in place of a number that could be any number, therefore, varying, making it a variable.)

3 = Constant (because the numbers stay the same, they are constant)

Hope this helps :)

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐