Puja Limbu did 8 out of 10 math problems and Raju Lama did 11 out of 15 similar math problems. Express the number of problems solved by each of them in fractions and identify who did better performance.

Yellow brass is approximately \( \frac{13}{20} \) copper. Express the amount of copper as a percentage.

2. \( \frac{2.362 \times 1.76}{1.46 \times 0.785} \) Ans it lies btw

A good grade of brass contains \( 60 \% \) copper, \( 1 \% \) tin and \( 39 \% \) zinc. If there are 240 lb of brass, determine the weight of each metal used.

What is the largest whole numbe that gives an answer of 500 when rounded to 1 significant figure?

2 ¿cual es el residuo del numero \( n=1^{5}+2^{5}+3^{5}+\cdots+100^{5} \) al dividirse por \( 4 ? \)