30th term of AP: 10,7,4.....is
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Step-by-step explanation:
Given AP : 10,7,4...
First term (a) =10
Common difference (d)=7-10= -3
we know that ,nth term of an AP =(an)=a+(n-1)d
30th term of the given AP
=(a30)= 10+(30-1)(-3)
= 10+(29)(-3)
= 10-87
therefore a30 =-77
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