Question

write the first term and common difference of the following A. P : a) 0.6, 1.7, 2.8, 3.9, b) ⅓ , 5/3, 9/3 , 13/5​

Answer 1

Step-by-step explanation:

(i) 3,1,−1,−3…

Here, first term, a=3

Common difference, d= Second term − First term

d=1−3=−2

(ii) −5,−1,3,7…

Here, first term, a=−5

Common difference, d= Second term − First term

d=(−1)−(−5)=−1+5=4

(iii)

3

1

,

3

5

,

3

9

,

3

13

Here, first term, a=

3

1

Common difference, d= Second term − First term

d=

3

5

−

3

1

=

3

4

(iv) 0.6,1.7,2.8,3.9…

Here, first term, a=0.6

Common difference, d= Second term − First term

d=1.7−0.6

=1.1

Answer 2

Answer:

a) here 1st term 0.6

common difference=(1.7-0.6)=1.1

b) here 1st term 1/3

common difference=(5/3-1/3)=4/3