Q : 2     Write first four terms of the AP, when the first term a and the common difference d are given as follows:

            (v)    \small a=-1.25,d=-0.25

Answers (1)

It is given that 
\small a=-1.25,d=-0.25
Now,
a_1= a =-1.25
a_2= a_1 + d= -1.25 -0.25= -1.50
a_3= a_2 + d= -1.50-0.25=-1.75
a_4= a_3 + d= -1.75-0.25=-2
Therefore, the first four terms of the given series are  -1.25,-1.50,-1.75,-2

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