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10th class progressions. find it . |
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Answer» ong>ANSWER: n=5 and an=a5=30 Step-by-step EXPLANATION: so as a5=30 so, tn=a+(n-1)d so, t5=10+(5-1)d so, 30-10=4d so,20/4=d so,5=d n is 5 here, and an is a5. |
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