Number System The difference between a number and its three-fifth is 50. What is the number? 75 125 100 None of these 75 125 100 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System The number of prime factors of (6)10×(7)17×(55)27 101 61 91 41 101 61 91 41 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System If 5/7 of a number is 145, what is 180% of that number ? 355.4 375.4 345.4 365.4 355.4 375.4 345.4 365.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 8 None of these 3.5 6 8 None of these 3.5 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 62, 18 65, 15 60, 20 64, 16 62, 18 65, 15 60, 20 64, 16 ANSWER DOWNLOAD EXAMIANS APP
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 45 65 55 35 45 65 55 35 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
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