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`(1/3.5+1/5.7+1/7.9+1/9.11+1/11.13+1/13.15)` के बराबर है?A. `2/45`B. `2/25`C. `7/45`D. `2/15` |
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Answer» Correct Answer - D According to the question `implies(3.5+1/5.7+1.739+1.9.11+1-11.13+1.13.15)` `implies 1/2(1/3-1/5+1/5-1/7+1/7-1/9+1/9-1/11+1/11-1/13+1/13-1/15)` `implies 1/2[1/3-1/15]implies1/2[(5-1)/15]` `implies1/2xx4/15=2/15` |
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