Ow many terms are there in the AP -1,-5/6,-2/3,-1/2...10/3
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a=-1,.
d=-5/6+1=1/6,
Tn=10/3.
n=?
Tn =a+(n-1)d
10/3= -1+(n-1)1/6
10/3=[-6+n-1]/6
10=[-7+n]/2
10×2=n-7
20+7=n
therefore,, n=27
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hope it helps you...
d=-5/6+1=1/6,
Tn=10/3.
n=?
Tn =a+(n-1)d
10/3= -1+(n-1)1/6
10/3=[-6+n-1]/6
10=[-7+n]/2
10×2=n-7
20+7=n
therefore,, n=27
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.
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hope it helps you...
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