म०स० `(48, 30)=` म०स० `(30,………).`

A ray of light incident at an angle of 48^(@) is refracted through a prism in its position of minimum deviation. The angle of prism is 60^(@) . Calculate the refractive index of the material of the prism. (sin 48^(@) = 0.74, sin 30^(@) = 0.50)

A milkman uses three containers for selling milk, their capacities being 40L, 30L and 20L respectively. He fills respectively 87.5%, 80% and 90% of the containers with a mix of milk and water in the ratios, 3:2, 5:1 and 7:2 respectively. What is the ratio of total quantity of milk to that of water carried by him ? एक दूध वाला दूध बेचने के लिए तीन बर्तनों का इस्तेमाल करता है, उनकी धारिता क्रमशः 40 ली०, 30 ली० और 20 ली० है | वह बर्तनों का 87.5%, 80% और 90% भाग दूध और पानी से भरता है जो क्रमशः 3 : 2, 5 : 1 और 7 : 2 के अनुपात में हैं | उसके पास मौजूद दूध और पानी की कुल मात्रा का अनुपात ज्ञात करें |

The sum of two positive numbers is 240 and then HCF is 15. Find the number of pairs of numbers satisfying the given conditions. दो धनात्मक संख्याओं का योग 240 है, और उनका म.स.प. (HCF)15 है। दी गई शर्त को संतुष्ट करने वाली संख्याओं के युग्मों को संख्या ज्ञात कीजिए।

Find the standard deviation of the following set of numbers: 25, 50, 45, 30, 70, 42, 36, 48, 34, 50

The following are the marks of 9 students in a class. Find the median: 34, 32, 48, 38, 24, 30, 27, 21, 35

The following are the marks of 9 students in a class. Find the median: 34, 32, 48, 38, 24, 30, 27, 21, 35

Evaluate: 48^(3)-30^(3)-18^(3)