petrified17 wrote:

there are 11 numbers in a set, is the median 20?

1) The smallest 6 numbers is equal to or less than 20

2) The greatest 6 numbers is equal to or greater than 20

Median of 11 numbers is the 6th number

S1 - The smallest 6 numbers is equal to or less than 20

Not sufficient.

S2 - The greatest 6 numbers is equal to or greater than 20

Not sufficient.

Combining both, the only common number in both statements is the 6th number since total numbers are 11.

therefore, the 6th no. shall be equal to 20 i.e. median =20.

Sufficient. Answer C

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