Number System Find the number of factors of 300 excluding 1 and itself. 14 15 16 18 14 15 16 18 ANSWER DOWNLOAD EXAMIANS APP
Number System (12)² - (4.4)² - (0.04)² = ? 125.6384 124.6384 129.6384 131.6384 125.6384 124.6384 129.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
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 ? 158 163 167 160 158 163 167 160 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 124, 235, 447, 760, 1174, ? 1489 1589 1689 1389 1489 1589 1689 1389 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System (√6 + 1)² = ? + 2√6 7 8 6 5 7 8 6 5 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 What should come in place of question mark (?)? 8 : 1 1 : : 72: 89 99 79 109 89 99 79 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
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