If the last term of the AP is 5, 3 , 1 , -1, ..... is - 41, then the AP consists of how many terms? a)46 b)25 c)24 d)23
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Answered by
3
Answer:
option c is correct.
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Answered by
5
Answer:
a= 5. b= -2
-41=a+(n-1)d
-41 =5+(n-1)(-2)
-41-5=(n-1)(-2)
46=(n-1)2
23=n-1
n= 24
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