The 8th term of an AP is 17 and the 19th term is 39. Find the 25th term
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Answer:
hence,25th term is 51..
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Step-by-step explanation:
a8=a+(n-1)d
17=a+7d
a19=a+(n-1)d
39=a+18d
a+18d=39
a+7d=17
=11d=22
d=22/11=2
a+7×2=17
a+14=17
a25=3+(25-1)2
=3+24×2
=3+48
a25=51
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