Number System A number exceeds by 25 from its 3/8 part. Then the number is? 39 40 35 32 39 40 35 32 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the sum of all the prime numbers from 20 to 40? 119 117 118 120 119 117 118 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 116 112 120 124 116 112 120 124 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 74 61 69 65 74 61 69 65 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 Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 64, 16 65, 15 62, 18 60, 20 64, 16 65, 15 62, 18 60, 20 ANSWER DOWNLOAD EXAMIANS APP
Number System What is 432 times 119 ? 50408 51408 52408 53408 50408 51408 52408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
EXAMIANS