Answers

2016-03-04T09:34:22+05:30
A= 40
d= a2 - a1 = 37 - 40= -3

an= a+(n-1)d
a0= 40+(0-1)-3
    = 40+(-1)-3
    = 40+3
    =43
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2016-03-04T09:41:23+05:30
AP . 40, 37 ,34
a = 40
d =( -3)
an = 0
an = a +( n-1) d
0 = 40 + ( n - 1 ) (-3)
0 = 43 - 3n + 3
43 - 3n = 0
3n = 43
n = 43 / 3
but n must be positive and natural no.
therefor, 0 is not a term of this AP.
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