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[" 13."log(A)B" ,where "B=(12)/(3+sqrt(5...

[" 13."log_(A)B" ,where "B=(12)/(3+sqrt(5)+sqrt(8))" and "A=sqrt(1)+sqrt(2)+sqrt(5)-sqrt(10)" is - "],[[" (A) a negative integer "," (B) a prime integer "],[" (Cy positive integer "," (D) an even-natural number "]]

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if B=(12)/(3+sqrt(5)+sqrt(8)) and A=sqrt(1)+sqrt(5)+sqrt(8)-sqrt(10) then value of log_(A)B is

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