How can you make number one disappear by adding something to it?

O_er_t_o_

Complete the missing letters of the given word.

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Find the missing letter in the last circle logically in the given below picture.

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

what does the below rebus means?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Can you name an animal whose killing cannot be performed without spilling your own blood?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.