Question Detail 18800 / 470 / 20 1234 Answer: Option BExplanation:18800 / 470 / 20 = (18800 / 470) / 20 = 40 / 20 = 2 Similar Questions : 1. 3640 ÷ 14*16 + 340 = ? 3500450015002500 Answer: Option B 2. Simplify \begin{aligned} 1\frac{3}{4}+5\frac{1}{3}+3\frac{2}{5} \end{aligned} \begin{aligned}10\frac{29}{60} \end{aligned}\begin{aligned}8\frac{29}{60} \end{aligned}\begin{aligned}6\frac{29}{60} \end{aligned}\begin{aligned}4\frac{29}{60} \end{aligned} Answer: Option AExplanation:\begin{aligned} = \frac{7}{4}+\frac{16}{3}+\frac{17}{5} \end{aligned} \begin{aligned} = \frac{105+320+204}{60} \end{aligned} \begin{aligned} = \frac{629}{60} \end{aligned} \begin{aligned} = 10\frac{29}{60} \end{aligned} 3. 5.8 * 2.5 + 0.6 * 6.75 + 139.25= ? 157.60147.80147.60157.80 Answer: Option D 4. The number of girls in a class are 7 times the number of boys, which value can never be the of total students 40482430 Answer: Option DExplanation:Let the boys are X, then girls are 7X, total = X+7X = 8X So it should be multiple of 8, 30 is not a multiple of 8. 5. If p - q = 3 and \begin{aligned} p^2 + q^2 = 29 \end{aligned}, find the value of pq. 78910 Answer: Option DExplanation:We know \begin{aligned} 2ab = (a^2 + b^2) - (a - b)^2 \end{aligned} \begin{aligned} 2pq = 29 - 9 = 20 \end{aligned} \begin{aligned} =>pq = 10 \end{aligned} Read more from - Simplification Questions Answers