Question

If the given interchanges namely : signs + and $÷$ and numers 2 and 4 are made in signs and numbers which one of the following four equations would be correct ?

• A. $2+4÷3=3$
• B. $4+2÷6=1.5$
• C. $4÷2+3=4$
• D. $2+4÷6=8$

Answer 1

The correct option is D $2+4÷6=8$

Interchanging (+ and ÷÷ ) and (2 and 4) we get:
(1) 4÷2+3=3or5=34÷2+3=3or5=3 which is false
(2) 2÷4+6=1.5or6.5=1.52÷4+6=1.5or6.5=1.5 which is false
(3) 2+4÷3=4or103=42+4÷3=4or103=4 which is false
(4) 4÷2+6=8or8=84÷2+6=8or8=8 which is true.