Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 35 45 55 65 35 45 55 65 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System Complete the series : 1, 2, 3, 5, 8, 13 .... 7 9 1 4 7 9 1 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1
Number System Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively? 61 65 67 75 61 65 67 75 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the least number to be subtracted from 696 to make it a perfect square? 20 16 1 71 20 16 1 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 18 21 28 12 18 21 28 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System (√6 + 1)² = ? + 2√6 6 5 8 7 6 5 8 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7
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