How many terms of the arithmetic sequence 2,4,6,8, ... add up to 60,762?
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a=2
d=2
an= 60,762
But,
an= a+(n-1)d
i.e., 60762= 2+(n-1)2
i.e., 60762= 2+2n-2
i.e., 60762= 2n (Since -2+2=0)
i.e., 60762/2=n
Therefore, n=30381
d=2
an= 60,762
But,
an= a+(n-1)d
i.e., 60762= 2+(n-1)2
i.e., 60762= 2+2n-2
i.e., 60762= 2n (Since -2+2=0)
i.e., 60762/2=n
Therefore, n=30381
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