H/co
Score:40
Maths.
find the 30th term of the althensatic sequence of
5 time the 5th team is equle to the 8th time 8th term
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Answer:
If given 5 times the fifth term of an A.P. is equal to 8 times its eight term, show that its 13th term is zero.
Step-by-step explanation:
ANSWER
Given 5 times 5th term 8 times 8th term
5(a+(5−1)d)=8(a+(8−1)d) ......... [ tn=a+(n−1)d ]
5a+20d=8a+56d
⇒3a+36d=0
∴a+12d=0
Comparing this with a+(n−1)d,
we get ,n−1=12
n=13th term.
Hence, 13th term is zero.
HOPE IT'S HELPFUL......
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