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aditi

· started a discussion

· 1 Months ago

Please provide short method for the question (Question: 88891.2 )

The given question will not be solved within a minute using this method.Kindly provide an alternate short method.If you are uploading such time consuming questions,at least provide time reducing solutions.

Question:
DIRECTIONS: What will come in place of question mark (?) in the following question ? 
\(\left ( 1-\cfrac {1}{2^2} \right )\left ( 1-\cfrac {1}{3^2} \right )\left ( 1-\cfrac {1}{4^2} \right )....\left ( 1-\cfrac {1}{9^2} \right )\left ( 1-\cfrac {1}{10^2} \right )\) = ?
Options:
A) \(\cfrac{20}{11}\)
B) \(\cfrac{19}{20}\)
C) \(\cfrac{20}{19}\)
D) \(\cfrac{11}{20}\)
E)

None of these

Solution:

Ans: (d) 


Knowledge Expert

· commented

· 1 Months ago

Hi Aditi, its already too short, you must do more practice to simplify it fast............
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