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If a number leaves remainder 1, 3, 5, or 7 when divided by 8, what is the remainder when its square is divided by 8?यदि किसी संख्या को 8 से भाग देने पर शेषफल 1, 3, 5 या 7 है, तो उसके वर्ग को 8 से भाग देने पर शेषफल क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 11
Step 1: These remainders all represent odd numbers. Step 2: (1^2,3^2,5^2,7^2) all leave remainder 1 when divided by 8. Step 3: Remember that the square of an odd number leaves remainder 1 on division by 8.चरण 1: ये सभी शेषफल विषम संख्या को दिखाते हैं। चरण 2: (1^2,3^2,5^2,7^2) सभी को 8 से भाग देने पर शेषफल 1 मिलता है। चरण 3: विषम संख्या के वर्ग का 8 से शेषफल 1 याद रखें।
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