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snow_tiger [21]
3 years ago
9

I just need someone to check my answer:

Mathematics
1 answer:
babunello [35]3 years ago
5 0
Sum is n(an+a1)/2

an=a1+d(n-1)
common differnce is 6
first term si 3
an=3+6(n-1)
24th term
a24=3+6(24-1)
a24=3+6(23)
a24=3+138
a24=141

so nth term is 141
n=24
24(3+141)/2=12(144)=1728

answer is B



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