find the valve of middle most term of the a .p -15,-11,......53
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Hey, we can solve it from the A.P formula
First term=a=-15
Last term=53=tn
common difference=+4
Tn=a+(n-1)d
53=-15+(n-1)4
53=-15+4n-4
53=-19+4n
72=4n
n=18
No.of terms=18
as, the number of terms is even, there is no middle term
Hence, we will take the average of two middle terms
Hope u got it
First term=a=-15
Last term=53=tn
common difference=+4
Tn=a+(n-1)d
53=-15+(n-1)4
53=-15+4n-4
53=-19+4n
72=4n
n=18
No.of terms=18
as, the number of terms is even, there is no middle term
Hence, we will take the average of two middle terms
Hope u got it
mannbareth:
genius what a brain
thanks a lot my friend
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