Find the sum of the first 30 terms of 1,3,5,
7, ............
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Answer:
1+5+9+13.. is an Arithmetic Progression
First term ==> a = 1
Common Difference ===> d = Second term - First term = 5-1 = 4
Formula for the sum of first n terms of an A.P =
n/2 [2a+(n-1)d]
We need the sum of first 30 terms:
30/2 [ 2 (1) + (30-1)(4)]
15 [2+ 29×4]
15 [2+ 116]
15 [118]
1770
Step-by-step explanation:
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