चला, या प्रश्नांचे उत्तर एक एक करुन बघू.
### Step-by-step Solutions:
1. Fraction Multiplication
[tex]\[
\frac{1}{3} \times \frac{1}{4} = \frac{1 \times 1}{3 \times 4} = \frac{1}{12}
\][/tex]
2. Fraction Multiplication
[tex]\[
\frac{3}{2} \times \frac{1}{4} = \frac{3 \times 1}{2 \times 4} = \frac{3}{8}
\][/tex]
3. Fraction Multiplication
[tex]\[
\frac{1}{4} \times \frac{4}{3} = \frac{1 \times 4}{4 \times 3} = \frac{4}{12}
\][/tex]
4. Fraction Multiplication
[tex]\[
\frac{7}{4} \times \frac{2}{5} = \frac{7 \times 2}{4 \times 5} = \frac{14}{20}
\][/tex]
5. Fraction Multiplication
[tex]\[
\frac{2}{5} \times \frac{2}{4} = \frac{2 \times 2}{5 \times 4} = \frac{4}{20}
\][/tex]
6. Fraction Multiplication
[tex]\[
\frac{1}{6} \times \frac{3}{5} = \frac{1 \times 3}{6 \times 5} = \frac{3}{30}
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7. Fraction Multiplication
[tex]\[
\frac{1}{5} \times \frac{1}{6} = \frac{1 \times 1}{5 \times 6} = \frac{1}{30}
\][/tex]
8. Fraction Multiplication
[tex]\[
\frac{2}{3} \times \frac{3}{2} = \frac{2 \times 3}{3 \times 2} = \frac{6}{6} = 1
\][/tex]
9. Fraction Multiplication
[tex]\[
\frac{8}{7} \times \frac{5}{2} = \frac{8 \times 5}{7 \times 2} = \frac{40}{14}
\][/tex]
10. Fraction Multiplication
[tex]\[
\frac{2}{5} \times \frac{3}{2} = \frac{2 \times 3}{5 \times 2} = \frac{6}{10}
\][/tex]
11. Fraction Multiplication
[tex]\[
\frac{1}{5} \times \frac{15}{7} = \frac{1 \times 15}{5 \times 7} = \frac{15}{35}
\][/tex]
12. Fraction Multiplication
[tex]\[
\frac{22}{7} \times \frac{7}{11} = \frac{22 \times 7}{7 \times 11} = \frac{154}{77}
\][/tex]
Summarized Solutions:
[tex]\[
\begin{aligned}
1) & \quad \frac{1}{3} \times \frac{1}{4} = \frac{1}{12},\\
2) & \quad \frac{3}{2} \times \frac{1}{4} = \frac{3}{8},\\
3) & \quad \frac{1}{4} \times \frac{4}{3} = \frac{4}{12},\\
4) & \quad \frac{7}{4} \times \frac{2}{5} = \frac{14}{20},\\
5) & \quad \frac{2}{5} \times \frac{2}{4} = \frac{4}{20},\\
6) & \quad \frac{1}{6} \times \frac{3}{5} = \frac{3}{30},\\
7) & \quad \frac{1}{5} \times \frac{1}{6} = \frac{1}{30},\\
8) & \quad \frac{2}{3} \times \frac{3}{2} = \frac{6}{6},\\
9) & \quad \frac{8}{7} \times \frac{5}{2} = \frac{40}{14},\\
10) \quad \qquad & \frac{2}{5} \times \frac{3}{2} = \frac{6}{10},\\
11) \quad \qquad & \frac{1}{5} \times \frac{15}{7} = \frac{15}{35},\\
12) \quad \qquad & \frac{22}{7} \times \frac{7}{11} = \frac{154}{77}.
\end{aligned}
\][/tex]
