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CBSE Class 10 Answered

 find the 25th term of AP = -5,-5/2,0,5/2
Asked by mdraishbst | 20 Oct, 2018, 05:28: PM
answered-by-expert Expert Answer

A=-5

D= a2-a1

=  -5/2-(-5)

= -5/2+5

=d=5/2

An=a+(n-1)d

   =-5+(25-1)(5/2)

  = -5+(24)(5/2)

= -5+60

=55 ans.

Answered by Arun | 21 Oct, 2018, 07:35: AM

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