Question

MENTION WHAT DO YOU FOLLOWING STAND FOR IN EQUATION AS FOLLOWS ::: (I ) Nt + 1' ¤¤ (ii) B and (iii) E ♡♡ Nt + 1 = N not + [(B + I ) - ( D+E ) ] ☆☆☆ IF ANYONE IS GENIOUS THERE THAN ANSWER THIS QUESTION.^.^​

Answer 1

which class question