if 14th term and 13th term of an a.p are 98 and 91 . what is the value of d?
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if 14th term and 13th term of an a.p are 98 and 91 . what is the value of d?
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t13=a+12d=91. ......... eqn2
-. -. =-
_______________
0+d=7
d=7