In an A.P S9=45 then find a5
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Answer:
A5=5
Step-by-step explanation:
S9=9/2*{2a + 8d}=45, where a is the first term and d is the common difference of the AP.
Which implies that a+4d=5.
But, a5= a +(5-1)d = a +4d.
Hence a5=5.
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