in an examination , 25 % of total students failed in hindi , 50 % failed in english and 25 % in both . the percentage of these who passed in both the subjects is :
"explanation : formula n ( a â ˆ ª b ) = n ( a ) + n ( b ) â ˆ ’ n ( a â ˆ © b ) fail in hindi or english = 25 + 50 â € “ 25 = 50 therefore students who passed = 100 â € “ 50 = 50 . answer : e"
subtract(const_100, subtract(add(25, 50), 25))