find the number of terms in an ap 18, 15 ,12 .......- 48 and also find the sum of all its terms

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Ohh mam
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yes janab
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hru.
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hello mam Ham kaise ho aap
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bekar
  • -3
hu me
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Kyo....
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aaj btua thak gai hu
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kam karke
  • -4
kyon aaj jyada Dudh paka rahi thi kya
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nhi yaar vo baat nhi ha
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Yaar ye kya chal raha hai
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yah group wale Kya Kiya Dal Ne Mere bare mein hi Prabhu Maro Mujhe maro
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kya.
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abe Ham Jaise Sidhe Sadhe ladke gf banaa rahe hai Prabhu
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hehehe
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