(1/2×4×6 )+(1/4×6×8)+.... 10th terms
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Answer:120
Step-by-step explanation:
Answered by
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Step-by-step explanation:
1st term( a) =12 , 2nd term =12 ,d= 1st term _ 2nd term = 0,sum = n÷2 (2a+(n-1)d)=120
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