‘A+B’ means ‘A’ is the brother of B’.‘A-B’ means ‘A’ is the husband of B’.‘A×B’ means ‘A’ is the mother of B’.‘A÷B’ means ‘A is the sister of B’. If P+R÷T-K×O×C, then how is P related to O?

The following question is based on a code language in which FORMATION is written as ZSXTJOBSL and RACIAL is written as XJNBJQ. How is RATIONAL written in this language?

Arrange the given words in the sequence in which they occur in the dictionary.
1. Home 2. Homer 3. House 4. Honor 5. Horror

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_sr_tr_srs_r_srst_

If - means ×, × mean000000s +, + means ÷ and ÷ means -, then
4 × 4 + 16 - 16 ÷ 30 = ?

Three of the following four words are alike in a certain way and one is different. Pick the odd word out.

Arrange the following words as per order in the dictionary.
1. Arrange
2. Appeal
3. Area
4. Air
5. April

Three of the following four words are alike in a certain way and one is different. Pick the odd word out.