Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 69 61 65 74 69 61 65 74 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 6.4 x 8.5 x 25/3.2 x 12.5 = ? 4.5 2.3 3.4 5.6 4.5 2.3 3.4 5.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 6.4 x 8.5 x 2.5/3.2 x 12.5 = 3.4
Number System If 35% of a number is 899.5, what is 68% of that number ? 1847.6 1747.6 1547.6 2247.6 1847.6 1747.6 1547.6 2247.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Suppose the number is x.Then 35% of x = 899.5∴ 68% of x = 68/35 x 899.5 = 1747.6
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 11 225 321 121 11 225 321 121 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System What is the sum of the local values of the digits 2, 3, 4, 5 in the number 2345? 5243 2435 2105 2345 5243 2435 2105 2345 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2000 + 300 + 40 + 5 = 2345
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 210 222 234 204 210 222 234 204 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
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