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Question

Question 3
The list of numbers -10, -6, -2, 2, ... is

A) an AP with d = - 16
B) anAP with d = 4
C) an AP with d = - 4
D) not an AP

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Solution

The given numbers are – 10, –6, –2, 2, ...
Here, a1=10, a2=6, a3=2 and a4=2
Since, a2a1=6(10)
=6+10=4
a3a2=2(6)
=2+6=4
a4a3=2(2)
=2+2=4
The difference between any two consecutive terms of the series is 4.
So, the given list forms an AP with a common difference, d = 4.

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