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Questions  

The value of log34 log45 5log56 log67 log78 log89 is

a
1
b
2
c
3
d
4

detailed solution

Correct option is B

log34.log45.log56.log67.log78.log89=log 4log 3.log 5log 4.log 6log 5.log 7log 6.log 8log 7.log 9log 8=log 9log 3=log39=log332=2.

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