What is the rule for the geometric sequence
shown?
1, 2, 4, 8
an = 0.25(2)n-1
an = 2(2)
an = (2)n-1
an = 1 + (n-1)(2)

= 2

Step-by-step explanation:

Given the sequence

1, 2, 4, 8

Noe that each term is twice the previous term, thus recursive rule is

= 2

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⭐