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Mathematics
Enzo Booth
19 July, 18:49
163, 160,157, ... Find the 42nd term.
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Dawson Williamson
19 July, 21:48
0
40
Step-by-step explanation:
163, 160,157, ... Find the 42nd term
a_1 = 163
common difference d = 160 - 163 = - 3
use the formula : a_n = (n - 1) * d + a_1
so
a_42 = (42 - 1) * (-3) + 163
a_42 = 41 * (-3) + 163
a_42 = - 123 + 163 = 40
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