find the sum of the following APs 2,7,12......to10terms
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Answered by
5
Given,
a = 2
d = a+d-a =7-2
= 5
According to the data:
S10 = [2a + (n - 1)d] (10/2)
= 2*2 + (10- 1) 5*5
= 4+ (9*5)(5)
= 49*5
= 245
Hope this is correct. Please regard it as the best
a = 2
d = a+d-a =7-2
= 5
According to the data:
S10 = [2a + (n - 1)d] (10/2)
= 2*2 + (10- 1) 5*5
= 4+ (9*5)(5)
= 49*5
= 245
Hope this is correct. Please regard it as the best
Gyanendravaish:
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answer was for sum... u found 10th term....
Answered by
13
a = 2
d = 5
n = 10
Sn = [ 2 a + (n-1)d ] n/2
= [ 2 * 2 + 9 * 5 ] 10/2
= 49 * 5
= 245
d = 5
n = 10
Sn = [ 2 a + (n-1)d ] n/2
= [ 2 * 2 + 9 * 5 ] 10/2
= 49 * 5
= 245
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