forn variables, f(x1,x2,...xn) there will be total nC[n/2] terms for OR operation. Each term contains [n/2] variables for AND operation.
ex: f(00111)= OR{ and(0,0,1) and(0,0,1) and(0,0,1) and(0,1,1) and(,0,1,1) and(0,1,1,) and(0,1,1) and (0,1,1,) and(0,1,1,) and(1,1,1 )
=0 OR 0 OR 0 OR...... OR 1=1=majority of ones is true.