Hindi, asked by KJasleen8451, 9 months ago

समांतर श्रेणी - 11,-8,-5,....49 का अंत से चौथा पद ज्ञात कीजिए

Answers

Answered by tshiva7052
3

Answer:

n= 22

Explanation:

formula for finding last term in A.P.

 l=a+(n-1)*d

l=49

a=-11

n=?

d= -8-(-11) = 3

  getting the value in formula .

  49=-11+(n-1)*3

60=(n-1)*3

20=n-1

n=21     ANS

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