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Deepak Bora
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Find the 25th term of the AP 5, 4_1 /2 , 4, 3_1 /2 , 3, ……….

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This is the Important question based on Arithmetic progression Chapter R.S Aggarwal book for ICSE & CBSE Board.
Here the AP is given. you have to find the nth term of given AP
This is the Question Number 6 Exercise 11 A of RS Aggarwal Solution.

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  1. Given AP is 5, 4_1 /2 , 4, 3_1 /2 , 3, ……….
    Here First Term a=5

    To Find the nth Term of the above AP

    Common Difference
    d=4_1 /2 -5= -1/2
    n=25
    a_n = a+(n-1)d
    a_25 = 5 + (25-1)(-1/2)
    = -7

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