what is the sum of the first 10 odd multiples of 3?
pls answer with explanation
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what is the sum of the first 10 odd multiples of 3?
pls answer with explanation
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Answer:
165
Step-by-step explanation:
1 x 3 = 3
2 x 3 = 6
3 x 3 = 9
4 x 3 = 12
5 x 3 = 15
6 x 3 = 18
7 x 3 = 21
8 x 3 = 24
9 x 3 = 27
10 x 3 = 30
Answer is 300
Step-by-step explanation:
3,9,15,21,27,33,39,45,51,57
a2-a1=9-3=6
d=6
a=3
n=10
l=57
sn=n/2(a+l)
=10/2(3+57)
=5(60)
=300