Q1 of 69 Page 61

Which of the following sequences are A.P. ? If they are A.P. find the common difference.

127, 132, 137, . . .

127, 132, 137, . . .


Here, the first term, a1 = 127


Second term, a2 = 132


a3 = 137


Now, common difference = a2 – a1 = 132 – 127 = 5


Also, a3 – a2 = 137 – 132 = 5


Since, the common difference is same.


Hence the terms are in Arithmetic progression with common difference, d = 5.


More from this chapter

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1

Which of the following sequences are A.P. ? If they are A.P. find the common difference.

 1

Which of the following sequences are A.P. ? If they are A.P. find the common difference.

 2

Write an A.P. whose first term is a and common difference is d in each of the following.

a = 10, d = 5

 2

Write an A.P. whose first term is a and common difference is d in each of the following.

a = – 3, d = 0