Question 3 (i)
Write the first three terms of the AP’s, when a and d are as given below: a=12,d=−16
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Solution
Given that,
First term (a) =12and common difference (d) =−16 ∵nth term of an AP,Tn=a+(n−1)d ∴Second term of the AP, T2=a+d=12−16=26=13 Third term of the AP, T3=a+2d=12−26=12−13=3−26=16