Number System The difference between two integers is 5. Their product is 500. Find the numbers. 30, 25 15, 20 20, 25 21, 26 30, 25 15, 20 20, 25 21, 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System 450% of a number is 4725. What is 82% of that number ? 871 851 861 841 871 851 861 841 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
Number System 6.4 x 8.5 x 25/3.2 x 12.5 = ? 3.4 5.6 2.3 4.5 3.4 5.6 2.3 4.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System 8988 / 8 / 4 = ? 280.875 4494 2247 561.75 280.875 4494 2247 561.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 4 None 6 2 4 None 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 77 75 78 76 77 75 78 76 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
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