Question:
what is the common difference of the a.p -56,-45,-34,-23,-12,1,12,23
Answer:
Given, series is:
-56,-45, -34, -23, -12, 1, 12, 23
Now, common difference is calculated as the difference of ant two consecutive number
=> d = -45 - (-56) = -34 - (-45) = -23 - (-34) = -12 - (-23), etc
=> d = -45 + 56 = -34 + 45 = -23 + 34 = -12 + 23, etc
=> d = 11
So, the common difference is 11
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