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2. Decide whether following sequence is an A.P. if so find the 20 term of the progression-12. -5, 2. 9. 16. 23. 30.​

Answer» YES and 20TH term of PROGRESSION will be a+(N-1)da will be the FIRST number of progression d the difference and n the term to be foundtherefore =-12+(20-1)7 -12+133 121


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