First 100 terms of the following sequence 3 ,7 ,11
2 answers:
Given that

<u>Find the nth term:
</u>



<u>Find the 100th term:</u>

<u>Find the Sum:</u>
Comment
Quick Answer: 20100
I'm going to guess and say you want the sum of the first hundred terms of this series.
Givens
a1 = 3
n = 100
d = 4
Step One
Find L
L = a1 + (n - 1)*d
L = 3 + (100 - 1)*4
L = 3 + 99 * 4
L = 399
Step 2
Find the sum of the first 100 terms of the series.
Sum = (a + L)*n/2
<em>Givens</em>
a = 3
L = 399
n = 100
Sum = (3 + 399)*100/2
Sum = 402 * 50
Sum = 20100 <<<<< Answer
Please leave a note if I am incorrect.
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