Find the average of first 15 multiples of 12
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12+24+36+48+60+72+84+96+108+120+132+144+156+168+180
let it is a ap
where
a=12
d=12
avarage=s/n=15/2[2a+(n-1)d]/15
15/2×15[2×12+(15-1)12]
2×[24+(14)12]
2×[24+168]
2×[192]
384
hope it helpful for you
let it is a ap
where
a=12
d=12
avarage=s/n=15/2[2a+(n-1)d]/15
15/2×15[2×12+(15-1)12]
2×[24+(14)12]
2×[24+168]
2×[192]
384
hope it helpful for you
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