Direction: Read the following information carefully and answer the questions given below:

There are seven members Kiku, Piku, Miku, Riku, Tiku, Niku, and Biku in a family of 3 generations. There are 3 females and 4 males in the family. 

Miku is the grandmother of Biku and the mother of Tiku. Piku is the only daughter of Riku. Kiku is the father of Riku, Who is a single parent. Niku is the father of Biku and is married to Tiku. Miku and Kiku are couple. Riku is the only sibling of Tiku.