Which of the following should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given expression in such a manner that makes the expressions 'F>N' and 'U>D' definitely false

F_O_U_N_D

Which of the following symbols should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given expression in such a manner that makes the expressions 'B>N' as well as 'D≤L'definitely true

B_L_O_N_D

Which of the following symbols should replace the question mark (?) in the given expression in order to make the expressions 'P>A' as well as 'T≤L' definitely true? 

P>L?A≥N=T

Which of the following expression will be true if the expression R>O=A>S

Statements : Company X has a record of manufacturing cameras of quality and the latest design so that you do not spoil even a single shot irrespective of the weather conditions.

Conclusions :

I. No other company except X is reputed in the camera industry.

II. Anyone can take an acceptable shot with camera X.

Statements : I know nothing except the fact of my ignorance.

Conclusions :

I. Writer's knowledge is very poor.

II. The world of knowledge is too vast to be explored by a single person.