Chapter 7 – Cubes and Cube Roots

Example 2 : Which of the following will have 1 at its units place? Example 2 : Which of the following will have 1 at its units place? July 12, 2021 Category: Chapter 6 - Squares and Square Roots , Chapter 7 - Cubes and Cube Roots , Maths , NCERT Class 8 ,

Example 1 : Which of the following is the square of an odd number? Example 1 : Which of the following is the square of an odd number? July 12, 2021 Category: Chapter 6 - Squares and Square Roots , Chapter 7 - Cubes and Cube Roots , Maths , NCERT Class 8 ,

12. A scooter was bought at Rs.42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year. 000. Its value depreciated at the rate of 8% per annum. Find its value after one year. 12. A scooter was bought at Rs.42 October 11, 2020 Category: Chapter 7 - Cubes [...]

11. In a laboratory, the count of bacteria in a certain experiment was increasing at the rate of 2.5% per hour. Find the bacteria at the end of 2 hours if the count was initially 5,06,000. 000. 06 11. In a laboratory the count of bacteria in a certain experiment was increasing at the rate [...]

8. Find the amount and the compound interest on Rs.10,000 for 1 1/2 years at 10% per annum, compounded half yearly. Would this interest be more than the interest he would get if it was compounded annually? 000 for 1 1/2 years at 10% per annum 8. Find the amount and the compound interest on [...]

7. Maria invested Rs.8,000 in a business. She would be paid interest at 5% per annum compounded annually. Find: (i) The amount credited against her name at the end of the second year. (ii) The interest for the third year. 000 in a business. She would be paid interest at 5% per annum compounded annually. [...]

6. Arif took a loan of Rs.80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after 1 1/2 years if the interest is: (i) compounded annually. (ii) compounded half yearly. 000 from a bank. If the rate of interest is 10% per [...]

5. Vasudevan invested Rs.60,000 at an interest rate of 12% per annum compounded half yearly. What amount would he get: (i) after 6 months? (ii) after 1 year? 000 at an interest rate of 12% per annum compounded half yearly. What amount would he get: (i) after 6 months? (ii) after 1 year? 5. Vasudevan [...]

4. I borrows Rs.12,000 from Jamshed at 6% per annum simple interest for 2 years. Had I borrowed this sum at 6% per annum compound interest, what extra amount would I have to pay? 000 from Jamshed at 6% per annum simple interest for 2 years. Had I borrowed this sum at 6% per annum [...]

3. Fabina borrows Rs.12,500 per annum for 3 years at simple interest and Radha borrows the same amount for the same time period at 10% per annnum, compounded annually. Who pays more interest and by how much? 3. Fabina borrows Rs.12 500 per annum for 3 years at simple interest and Radha borrows the same [...]