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

            (i)  \small a=10,d=10

Answers (2)

It is given that 
\small a=10,d=10
Now,
a_1= a =10
a_2= a_1 + d= 10 + 10 = 20
a_3= a_2 + d= 20 + 10 = 30
a_4= a_3 + d= 30 + 10 = 40
Therefore, the first four terms of the given series are 10,20,30,40 

a2= a+d+10=20

a3=a+2d=10+2(10)=10+20=30

A4=a+3d=10+3(10)=10+30=40

A5=a+4d=10+4(10)=10+40=50

10,20,30,40,50

 

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