Find the middle term of the A.P. -4,-2,0,...,88.
Answers
Answered by
4
Step-by-step explanation:
a=-4
d=2
a+(n-1)d=88
=>n= 47
Middle term is (n+1)/2 th term
=24th term
T24= a+23d
= -4+46= 42
ANSWER =42
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Answered by
2
Answer:
first term (a) = -4 , common difference(d) = 2
given last term = 88
a + ( n - 1) d = last term
where a is first term , d is common difference , n is no of terms
=> -4 + (n - 1)2 = 88
=> (n - 1)2 = 88+4
=> (n - 1) = 92/2
=> n = 47
Number of terms is odd so the middle term in an
AP = (n + 1 ) / 2
∴ middle term = 47+1/2 = 24
24th term in the given term = a + 23d
= 42
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