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If 4,a, b, 28 are in ap the value of b is .... Plz answer with explaination |
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Answer» Answer: 20 Step-by-step EXPLANATION: a-4=b-a=28-b=d (SAY)
a-4=d a=d+4 28-b=d b=28-d b-a=d 28-d-d-4=d 24=3d d=8 so, b=28-d=28-8=20 |
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