पहिल्या 123 सम नैसर्गिक संख्यांची बेरीज काढा?
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Answer:
ere ap is 2;4;6
a=2 d=2 n= 123
sn=n/2[2a+(n-1)d]
s123=123/2[2*2+(123-1)]
s123=123/2(126)
s123=123*63
s123=7749
Step-by-step explanation:
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