81 owls 108 bats and 162 crows have to be put in different cages and then arranged in a row in a suc...........

Quantitative Aptitude ( CCS) Number System

81 owls , 108 bats and 162 crows have to be put in different cages and then arranged in a row in a such way that each row has equal number of cages and each row cage has a particular type of bird only .The least number of rows needed are:

None of these

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Explanation:

Since each row should have same number of cages and
thus the number of cage in a row has to be a common factor of 81, 108, 162 i.e 27
So the number of rows required for this are
[81/27 + 108/27 + 162/27]= 3 + 4 + 6 =13 rows required