\( 10 \times 9= \) \( 5 \times 7= \) LCM \( 9,5= \) \( 56-11 \times 5= \) HCF \( 27: 18= \) \( \sqrt[3]{64}= \) \( 15^{2}= \) \( \sqrt[3]{216} \)

In a school Auditorium, there are three types of rows arrangements possible for watching programs: rows of 20 students per row, or rows of 25 students per row, or rows of 40 students per row. Find the least number of students required for any one of these arrangements so that all the students can be accommodated in each of these arrangements.

0. On a winter day, the temperature of Namche Bazar in the morning was \( -5^{\circ} \mathrm{C} \). It is increased by \( 10^{\circ} \mathrm{C} \) in the day time and again decreased by \( 6^{\circ} \mathrm{C} \) in the evening. a) Show this information in a number line. b) Write a mathematical expression to show the given information. c) Calculate the temperature of Namche Bazar in the evening.

(b) A two-storey car park has a total of 1020 parking spaces. At \( 06: 30 \) hours one morning, \( \frac{1}{30} \) of the 1020 spaces are filled. During the next hour, no cars left the car park but another \( \frac{4}{15} \) of the 1020 spaces are filled. Determine the number of parking spaces that are NOT filled at \( 07: 30 \) hours. (c) \( \begin{array}{l}\text { Of the } 1020 \\ \text { the top level? }\end{array} \)

अलग-अलुग कीमतों वाले दो तटह के दूध \( 2: 3 \) अनुपात कें किलाए जाते हैं। यदि पहले दूध की कीमत रूपये/लीटर तथा दूसटे दूध की कीमत 15 रूपये/लीटर तो मिश्रण का औसत मूल्य (प्रति लीटर) ज्ञात करें?

d) Find the greatest number of old people of a geriatric care centre to whom 50 sweaters, 75 kambals, and 100 warm jackets can be equally distributed. Also, find the share of each item among them.