Answer:
4718592
The pattern is x4
18, 72, 288, 1152, 4608, 18432, 73728, 294912, 1179648, 4718592
Explanation:
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a = 18
n = 10 th term
difference (d) = 72-10 = 62
an ( n th term ) = a + (n-1)d
a10 ( 10 th term = 18 + (10-1)62
= 18 + 9×62
= 18 + 558
10 the term = 576
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