What will come in place of '?' in the following question?
\(\frac{{? + 2.8 + 5.6}}{{3.5 - 2.1}} = 15\)
1
2.86
2
3.4
3
12.6
4
13.1
5
None of the above
What will come in place of '?' in the following question?
\(\frac{{? + 2.8 + 5.6}}{{3.5 - 2.1}} = 15\)