an A.P. consists of 60 terms.if the first and the last terms be 7 and 125 respectively,find 32nd term.

a=7

an=125

n=60 

hence,an=a+[n-1]d

            125=7+[60-1]d

             125-7=59d

               118/59=d

                  2=d

therefore,32nd term=a+31d

                                    =7+31[2]  

                                    =7+62

                                    =69

  • 28

 n = 60

a1 = 7

an = 125

125 = 7 + 59d

d =2

a32 = a + 31d

= 7 + 62

=69

  • -1
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