Square numbers always end in 0, 1, 4, 5, 6 or 9. No square ends in 2, 3, 7 or 8. Also, squares are formed by adding consecutive odd numbers starting from 1. Only squares have odd number of factors. Class ...
Category: Class 8 Maths
NCERT Solutions for Class 8 Maths all chapters updated for academic session 2020-2021.
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The five lockers that are toggled exactly twice are lockers numbered 2, 3, 5, 7 and 11. These are all prime numbers, which have only two factors—1 and the number itself—so they are touched just twice during the process. Class 8 ...
The locker numbers that remain open are the ones which are perfect squares: 1, 4, 9, 16, 25, 36, 49, 64, 81 and 100. These numbers have an odd number of factors and remain open after all toggling. Class 8 Mathematics ...
Kickstart your journey in Class 9th Maths with NCERT solutions and MCQ-based questions from Chapter 6: Lines and Angles. Solve exercise questions, short-answer problems and detailed explanations to understand the properties of angles formed by parallel lines and transversals. These ...
