23,21,19......5 are in arithemetic progression what is the last 7 th term
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The last 7th term is 11
Step-by-step explanation:
23,21,19......5 are in arithemetic progression
a=23 , d=21-23= -2 , n= 7
tn=a+(n-1)d
tn=23+(7-1)(-2)
tn=23+6(-2)
tn=23-12
tn=11
The last 7 thterm is 11
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