In an aviary there are a certain number of birds. Nine are crested birds and ten are spotted birds. Some of these have crests as well as spots. Of the seven yellow birds in the aviary, each one only…

Question

In an aviary there are a certain number of birds. Nine are crested birds and ten are spotted birds. Some of these have crests as well as spots. Of the seven yellow birds in the aviary, each one only has either crest or spots. Of the four red birds in the aviary all have spots only. Select the minimum possible number of birds that are there in the aviary.

PYQPulse · Accepted Answer

15

PYQPulse · Answer

Explanation: Maximising crest-spot overlap under the yellow/red constraints gives minimum 15 birds: option (c).

Answer: C. 15

Explanation

Answer: C. 15

Explanation