Math Chapter Wise Arithmetic English MCQ DSSSB 23 SEP 2018 (9 AM-11 AM) Q.Simplify, 5 7 2 9 7 + A7 5 9 2 7.7 B5 9 2 2 7 7 − C5 2 7 9 7 D5 9 2 2 7 7 + Show answer Correct answer: 7 5 9 2 7.7