( lo g 3 2 1 8 7 − 0 ) ( lo g 3 2 1 8 7 − 1 ) ⋅ ⋅ ⋅ ( lo g 3 2 1 8 7 − 2 1 8 5 ) ( lo g 3 2 1 8 7 − 2 1 8 6 )
Having solved 2187 Brilliant problems as of yesterday, I have decided to create an expression involving 2187 of the number 2187. Evaluate the expression above.
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Yes correct. Zero Product Property is the key to this problem.
nice its same as mine
In The problem ( lo g 3 2 1 8 7 − 0 ) ( lo g 3 2 1 8 7 − 1 ) ⋅ ⋅ ⋅ ( lo g 3 2 1 8 7 − 2 1 8 5 ) ( lo g 3 2 1 8 7 − 2 1 8 6 ) There may be one bracket of ( lo g 3 2 1 8 7 − 7 ) = ( lo g 3 2 1 8 7 − lo g 3 3 7 ) = ( lo g 3 2 1 8 7 − lo g 3 2 1 8 7 ) = 0 Therefore by zero product property the value of the expression is = 0
Great job!
just 3 mins gap! guess when i was about to finish, u did! anyway, from where did u learn all that computer science? also, when is fiitjee starting?
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I have asked the bhilai centre it says between 20and 25 th of april
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in other centres, it has already started and they have got the packages... from 6th onwards at many centres...kolkata, patna and from 26th march at delhi
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@Sarthak Rath – I think that is our misfortune
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@Mayank Raj – i guess that our batch will speed up after the great split! also, who is the sponcer of your vast computer knowledge? lvl 5?
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@Sarthak Rath – And in case of computer science I used java to solve level 4 problems
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@Mayank Raj – and that is the only way
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@Mayank Raj – how to use java here????
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@Sarthak Rath – I have learned in my school some conditional statements in java which helped me a lot in solving the problems
Your solution has been marked wrong. lo g a b − c = lo g a ( b − c ) .
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lo g 3 2 1 8 7 can be written as :
lo g 3 3 7
this is equal to:
7
putting 7 in place of lo g 3 2 1 8 7 ,
( 7 − 0 ) ( 7 − 1 ) ( 7 − 2 ) . . . . ( 7 − 7 ) . . . . ( 7 − 2 1 8 6 )
since 7 − 7 = 0 ,
the whole expression becomes z e r o .(required answer)