The first term of a geometric sequence is 400 and the common ratio is 0.5. What
is the 5 th term of the sequence?
100
50

25

Step-by-step explanation:

The n th term of a geometric sequence is

= a₁

where a₁ is the first term and r the common ratio

Here a₁ = 400 and r = 0.5 , thus

= 400 × = 400 × 0.0625 = 25

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⭐