Q1 of 202 Page 9

For the following arithmetic progressions write the first term a and the common difference d :

(i)


(ii)


(iii)


(iv)

(i)


First term, a = -5


Common difference, d = -1 – (-5)


= -1 + 5 = 4


(ii)


First term, a =


Common difference, d = - =


(iii)


First term, a = 0.3


Common difference, d = 0.55 – 0.30 = 0.25


(iv)


First term, a = -1.1


Common difference, d = -3.1 – (-1.1)


= -2


More from this chapter

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2

Find the indicated terms in each of the following sequences whose nth terms are:

(i)


(ii)


(iii)


(iv)


(v)

3

Find the next five terms of each of the following sequences given by:

(i)


(ii)


(iii)


(iv)

2

Write the arithmetic progression when first term a and common difference of d are as follows:

(i)


(ii)


(iii)

 3

In which of the following situation, the sequence of numbers formed will form an A.P.?

(i) The cost of digging a well for the first metre is Rs. 150 and rises by Rs.20 for each succeeding metre.


(ii)The mount of air present in the cylinder when a vacuum pump removes each time of their remaining in the cylinder.