Why do people go to bed?

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Three people are in a room. Ronni looks at the Nile. The Nile looks at Senthil. Ronni is married but Senthil is not married. At any point, is a married person looking at an unmarried person? Yes, No or Cannot be determined.

Can you find out which options fits best with the missing column?

People make me, save me, change me, raise me. What am I?

I don't get anymore wetter, no matter how much rain falls on me.

O_er_t_o_

Complete the missing letters of the given word.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?