Find the sum of first 123 even natural number arithmetic progression
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a1=2, d=2
n = 123
an =a+(n-1)d
so
an =2+(122)2
=244+2
246
sn =n/2 (a +an)
=123/2 (248)
=123×124
=15252
......
......
I hope that it's helpful for you.......
pls mark as brainliest
n = 123
an =a+(n-1)d
so
an =2+(122)2
=244+2
246
sn =n/2 (a +an)
=123/2 (248)
=123×124
=15252
......
......
I hope that it's helpful for you.......
pls mark as brainliest
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