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Arithmetic Progressions

Question
CBSEENMA10007829
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Write first four terms the A .P. when the first term ‘a’ and the common difference ‘d’ are given as follows :

a – 10, d = 10

Solution

a = 10, d = 10
First term = a = 10
Second term = 18 + d = 10+ 10 = 20
Third term = 20 + d = 20 + 10 = 30
Fourth term = 30 + d = 30 + 10 = 40
Hence, first four terms of the given A .P. are 10, 20, 30, 40.

Some More Questions From Arithmetic Progressions Chapter

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

a = – 1.25, d = – 0.25

For the following APs, write the first term and the common difference
3, 1, – 1, – 3, . . .

For the following APs, write the first term and the common difference
– 5, – 1, 3, 7, . . .

For the following APs, write the first term and the common difference
0.6, 1.7, 2.8, 3.9, . . .

Which of the following are APs ? If they form an AP, find the common difference d and write three more terms.
– 1.2, – 3.2, – 5.2, – 7.2, . . .

Which of the following are APs ? If they form an AP, find the common difference d and write three more terms.
 –10, –6, –2, 2, ....

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