This is the Important question based on Arithmetic progression Chapter of R.S Aggarwal book for ICSE & CBSE
Board.
Here the 2 terms of AP is given. you have to find the first term, common difference and AP
This is the Question Number 15 Exercise 11 A of RS Aggarwal Solution.
Deepak BoraNewbie
The 8th term of an AP is 37 and its 12th term is 57. Find the AP.
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Given a8 = 37
a12 = 57
a+7d = 37 ( 1 equation )
a+11d = 57 (2 equation )
now 2-1
4d = 20
d = 5
putting value of d in 1 equation
a+7*5 = 37
a= 37-35 = 2
thus a.p will be 2,7,12,17,22,27….