Question 1 (iv) Which of the following form an AP? Justify your answer. 11, 22, 33, ….
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Solution
Here,t1=11,t2=22,t3=33 t2−t1=22−11=11 t3−t2=33−22=11 t4−t3=33−22=11 Clearly, the difference between successive terms is same. Therefore, given list of numbers form an AP.