What will come in place of question mark ‘?’ in the following number question?
15 + (15 × 2 - 3 × 3) - 810 ÷ 54 = 273 ÷ ?1
21
2
31
3
13
4
17
5
19
What will come in place of question mark ‘?’ in the following number question?
15 + (15 × 2 - 3 × 3) - 810 ÷ 54 = 273 ÷ ?