Answer:
huh
Step-by-step explanation:
ano po yan? sorry po ha b0
bo po ka si ako eh hahah
This is a geometric sequence. The common ratio is
20/4 = 5 or 100/20 = 5
Using the formula:
an = a1(r)^(n-1)
a10=4(5)^(10-1)
a10 = 4(5)^9
a10 = 4(1953125)
a10 = 7812500
