Number System Twenty times a positive integer is less than its square by 96. What is the integer? Cannot be determined 24 20 30 Cannot be determined 24 20 30 ANSWER DOWNLOAD EXAMIANS APP
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 18 17 15 16 18 17 15 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System What should come in place of question mark (?) in the following number series ? 7, 176, 480, 1058, 2188, 4426, ? 8881 8888 8884 8882 8881 8888 8884 8882 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Series is (No. + 9²) x 2, (+8²) x 2, (+7²) x 2, (+6²) x 2.......
Number System The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ? 36 14 None of these 54 36 14 None of these 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10 x + yWhere x > yAccording to the question,x + y = 15 and x - y = 3Solving both the equations,x = 9, y = 6∴ x x y = 9 x 6 = 54
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 25 54 35 45 25 54 35 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 396 343 382 378 396 343 382 378 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
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