Question

Find the middle term of the A.P 5,2,-1,-4.........-31

Answer 1

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Answer 2

Answer:

-13

Step-by-step explanation:

• l=a+(n-1)d
• -31=5+(n-1)(-3)
• n-1=-36/-3
• n=12+1=13
• middle term=(13+1)/2
• middle term =7
• middle term= a+(n-1)d
• =5+(7-1)(-3)
• middle term=-13