Question

For the following APs, write the first term and the common difference:

• A. $3,1,-1,-\mathrm{3.......}$
• B. $-5,-1,3,7,....$
• C. $\frac{1}{3}$,$\frac{5}{3}$,$\frac{9}{3}$, $\frac{13}{3}$,...
• D. $0.6,1.7,2.8,3.9,....$

Answer 1

The correct option is A $3,1,-1,-\mathrm{3.......}$

A. $3,1,-1,-3,......$

the first term of the $AP$ is $3$

the common difference is $-2$

B. $-5,-1,3,7,......$

first term of the $AP$ is $-5$

common difference is $4$

C. $\frac{1}{3},\frac{5}{3},\frac{9}{3},\frac{13}{3},......$

first term of the $AP$ is $1/3$

common difference is $4/3$

D. $0.6,1.7,2.8,3.9,......$

first term of the $AP$ is $0.6$

common difference is $1.1$