Number System If a number is subtracted from its square we get 272. Find the number? 17 14 22 24 17 14 22 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 12 30 14 None of these 12 30 14 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 180 28 12 160 180 28 12 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System Write the next number in the series : 14, 16, 13, 17, 12, 18, 11 .... 7 15 1 19 7 15 1 19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 19
Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: 40 20 None of these 30 40 20 None of these 30 ANSWER DOWNLOAD EXAMIANS APP
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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