Question

(i
The 4th term of an A.P. is equal to 3 times the
first term and the 7th term exceeds the third
term by 1. Find the first term and common
difference.​

Answer 1

Answer:

Step-by-step explanation:

let a= first term,d=cd

then a4=a+3d=3a

2a=3d------------(1)

a7=a3+1

a+6d=a+2d+1

4d=1

d=1/4

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from(1)

2a=3*1/4=3/4

a=3/8