What should come in place of question mark (?) in the following questions?
$$3\frac{3}{4} \times 4\frac{5}{6} - ?=2\frac{3}{4}$$
$$\frac{34 \times 4-12 \times 8}{6^{2}+\sqrt{196}+(11)^{2}}=?$$
What should come in place of the question mark (?) in the following number series ?