Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 5 3 7 11 5 3 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 73/77 83/77 77/73 93/77 73/77 83/77 77/73 93/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System Which is the largest fraction among the following ? 24/25 21/22 21/23 12/13 24/25 21/22 21/23 12/13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 689 652 678 692 689 652 678 692 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System The Twenty-First Century will start on January 1 in the year 2001 2100 2101 2000 2001 2100 2101 2000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
Number System I. 3x2-14x + 8 = 0 II. 2y2 - 1 7 y + 36 = 0 if x <= y if x > y if x < y if x >= y if x <= y if x > y if x < y if x >= y ANSWER EXPLANATION DOWNLOAD EXAMIANS APP l. 3x2 - 12x - 2x + 8 = 0or 3x(x - 4) -2 (x -4) = 0∴ x = 4, 2/3ll. 2y2 - 8y - 9y + 36 = 0or 2y (y - 4) -9 (y - 4) = 0or (2y - 9) (y - 4) = 0∴ y = 4, 9/2
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