Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 65 74 61 69 65 74 61 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6080 5800 6000 5976 6080 5800 6000 5976 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 111 131 121 101 111 131 121 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 99 79 109 89 99 79 109 89 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
Number System Find the number which multiplied by 15 is increased by 196. 14 20 28 26 14 20 28 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System 16.23 x 12.9 + 17.32 = ? None of these 246.687 226.687 236.687 None of these 246.687 226.687 236.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
EXAMIANS