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Question
Question 1 (iii)
Which of the following form an AP? Justify your answer.
1, 1, 2, 2, 3, 3, ….
Which of the following form an AP? Justify your answer.
1, 1, 2, 2, 3, 3, ….
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Solution
Here, t1=1,t2=1,t3=2 and t4=2
t2−t1=1−1=0
t3−t2=2−1=1
t4−t3=−2−2=0
Clearly, the difference between the successive terms is not the same.
Therefore, the given numbers do not form an AP.
t2−t1=1−1=0
t3−t2=2−1=1
t4−t3=−2−2=0
Clearly, the difference between the successive terms is not the same.
Therefore, the given numbers do not form an AP.
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