What will come in place of the question mark (?) when + and − are interchanged and 5 and 18 are also interchanged?
5 − 18 + 12 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 11.
5 − 18 + 12 = ?
After interchanging signs and numbers,
= 18 + 5 - 12 = 11