find the value of n if 1+4+7+10+_ _ _ _ to n terms = 590
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Step-by-step explanation:
Sn=590
a=1
d=4-1
d=3
tn=a+(n-1)d
590=1+(n-1)3
590+1=3n-3
591=3n-3
591+3=3n
594=3n
594/3=n
n=198
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