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10, 30, 90, 270, 810

Step-by-step explanation:

geometric sequence formula is ar^(n-1)

a is the first term which is 10

r is the common ratio which is 3 (i.e the second term divided by the first term)

n is called the nth term

so we're looking for the fourth and fifth term

fourth term= 10*3^(4-1)

= 10*3^3

=10*27

=270

fifth term= 10*3^(5-1)

=10*3^4

=10*81

=810

step-by-step explanation: