Ten male animals each of type X and Y were living together for few months in captivity in a well-defined area (full of greenery). Other types of animals were not present in this area. Then an animal Z was introduced in this area. After few days, their numbers were counted as shown here.
X Y Z
10 2 1
What does this indicate?
Read the list of the animals given below and answer the following question.
Fox, Frog, Mouse, Elephant, Lizard, Duck, Camel, Crow, Pig, Parrot, Buffalo, Zebra
Which of the animals given in the list lay eggs?