Question : What is the value of $\frac{0.1 \div 0.2 \times 0.3+0.4 \times 0.5 \div 0.1}{0.1 \times 0.2-0.01} ?$

Question : What is the value of 0.8 × 0.8 × 0.8 + 0.7 × 0.7 × 0.7 + 2.52?

Question : The value of [0.004 × {5 ÷ (21 – 6) × 3} + 0.8] lies between:

Question : What is the value of $\sqrt{1.6 \times 1.6+0.9 \times 0.9+3.2 \times 0.9}$?

Question : What is the value of $\frac{1.2 \times 1.2+0.2 \times 0.2+1.2 \times 0.4}{1.8 \times 1.8+0.4 \times 0.4-1.8 \times 0.8} ?$