Find the sum of all odd integers from 3 to 450, which are divisible by 3.
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Answer:
n = 150
Step-by-step explanation:
3 , 6 , 9 ........ 450
a = 3
d = 6 - 3 = 3
an = 450
n = ??
an = a + (n - 1) d
450 = 3 + (n - 1) 3
450 = 3 + 3n - 3
450 = 3n
n = 150
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