Number System 0.333 .... × 0.444 .... is equal to 0.777 .... 1.333 .... 0.121212 .... 0.148148148 .... 0.777 .... 1.333 .... 0.121212 .... 0.148148148 .... ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.148148148 ....
Number System The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1027.75 1037.75 1043.75 1031.75 1027.75 1037.75 1043.75 1031.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System What number should replace both the question marks (?) in the following question ? 85 84 82 83 85 84 82 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? None of these 8 6 3.5 None of these 8 6 3.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1965 1975 1955 1945 1965 1975 1955 1945 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because (x + y)² = x² + y² + 2xy∴ x² + y² = (x + y)² - 2xy∴ x² + y² = (61)² - 2 x 888= 3721 - 1776 = 1945
Number System 666 / 6 / 3 = ? 111 37 84 333 111 37 84 333 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
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