justify why 0 cannot be a term of the A.P 31,28,25,22.....
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d=3
a=31
consider 0 as the nth term
0=a+(n-1)d
0=31+(n-1)3
0=31+3n-3
-31=3n-3
n=-28÷3
=9.333
as 9.33 is not a whole number 0 cannot be a number in this ap
a=31
consider 0 as the nth term
0=a+(n-1)d
0=31+(n-1)3
0=31+3n-3
-31=3n-3
n=-28÷3
=9.333
as 9.33 is not a whole number 0 cannot be a number in this ap
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