Number System 5525 ÷ 17 = √? 112225 99225 93025 105625 112225 99225 93025 105625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 44 45 47 46 44 45 47 46 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ? 158 163 160 167 158 163 160 167 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Average of 8 consecutive odd numbers = 656/8 = 82∴ Fourth number = 82 - 1 = 81∴ First numbers = 75Average of 4 even numbers = 87∴ Second even number = 87 - 1 = 86Second largest even number = 88∴ Required sum = 75 + 88 = 163
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 78 68 67 63 78 68 67 63 ANSWER DOWNLOAD EXAMIANS APP
Number System (√6 + 1)² = ? + 2√6 5 8 6 7 5 8 6 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
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 5 6 9 2 5 6 9 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
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