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CLASS 10TH - MATH UNIT TEST SOLVED PREM SIR

UNIT TEST – X MATHS (SET-B) 📘 UNIT TEST – X MATHS (SET-B) Solved by Prem Sir 📞 Contact: 6200409895 Q1. Find the HCF of smallest prime and smallest composite numbers. (2) Baccho ❤️, sabse chhoti prime number hoti hai 2 aur composite hoti hai 4 . Dono ka HCF nikalte hain: HCF(2, 4) = 2 ✅ Yani sahi uttar hai: 2 Q2. Prove that 5 + √3 is an irrational number. (5) Maan lo 5 + √3 rational hai. Toh 5 + √3 = a/b ⇒ √3 = a/b - 5 ⇒ rational ban gaya 😵 Par baccho, √3 to irrational hota hai! Galat maan liya. ✅ Isiliye 5 + √3 bhi irrational hai . Proved! Q3. Solve: x + 20y = 1000 and x + 26y = 1180 Chalo subtract karte hain: (x + 26y) - (x + 20y) = 180 ⇒ 6y = 180 ⇒ y = 30 Ab y = 30 ko kisi bhi eqn mein daalo: x + 20×30 = 1000 ⇒ x = 400 ✅ Final Answer: x = 400, y = 30 Q4. Show that 6ⁿ never ends with zero where n is a natural number. (3) Baccho, kisi bhi number ke last mein 0 tabhi aata hai jab usme 2 aur 5 dono ho. 6 = 2×3...
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CLASS - 7TH , SST , UNIT TEST SOLVED BY PREM SIR

Solved by Prem Sir 📘 Solved by Prem Sir Address: B312/6, Indra Enclave Phase 1, Kirari 1. Which is not a natural ecosystem? ✅ An aquarium 2. Which is not a component of human environment? ✅ Religion 3. How many fundamental rights are given in the Indian Constitution? ✅ Six 4. Which movement was started by Rosa Parks? ✅ Civil Rights Movement 5. Which is man-made environment? ✅ Road Q2. What are ecosystems? (2 marks) An ecosystem is a natural unit where living (plants, animals, humans) and non-living things (air, water, soil) interact with each other in a particular area. Q3. Why is universal adult suffrage important in a democracy? (2 marks) Universal adult suffrage ensures that every adult citizen has the right to vote, regardless of caste, gender, or religion. It gives people equal power to choose their leaders, which is the base of democracy. Q4. What are the main components of the environment? (3 marks) The main componen...
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