. The sum of the first 6 multiples of 10 is-
(A) 210
(B) 220
(C) 230
(D) 290
Answers
Answered by
1
Answer:
a = 10
d = 10
an = 60
an = a + (n - 1)d
an = 10 + (n - 1)(10)
60 = 10 + 10n - 10
10n = 60
n = 6
Sn = n/2{2a + (n - 1)d}
Sn = 3 {20 + 50}
S⁶ = 210
Answered by
1
Answer:
answer is 210
option a
Step-by-step explanation:
1st multiple of 10 is 10
2nd multiple of 10 is 20
3rd multiple of 10 is 30
4th multiple of 10 is 40
5th multiple of 10 is 50
6th multiple of 10 is 60
that is sum of
10+20+30+40+50+60=210
therefore option is a
hope it helps you
please mark me as brainlest
please rate my answer
thank you
who asked this question to me it is very simple ok
Similar questions