please help me very urgent...pls solve answers all questions.. very urgent..i am having board exam
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please help me very urgent...pls solve answers all questions.. very urgent..i am having board exam
please help me very urgent...pls solve answers all questions.. very urgent..i am having board exam
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Answer:
21- a = 12 , d = 3 , An = 99 , n = ?
An = a + (n-1) d
99 = 12 + (n-1) 3
33 = 12 +(n-1)3
33-12 = (n-1) 3
21/3 =(n-1)
7+1=n, n= 8.