Number System 35 + 15 * 1.5 = ? 51.5 57.5 5.25 75 51.5 57.5 5.25 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System The sum of 8 consecutive odd numbers is 656. Also average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second largest even number ? 160 158 167 163 160 158 167 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Average of 8 consecutive odd numbers = 656/8 = 82∴ Fourth number = 82 - 1 = 81∴ First numbers = 75Average of 4 even numbers = 87∴ Second even number = 87 - 1 = 86Second largest even number = 88∴ Required sum = 75 + 88 = 163
Number System Find the least number with which 16200 should be multiplied, to make it a perfect cube. 36 48 360 45 36 48 360 45 ANSWER DOWNLOAD EXAMIANS APP
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289/290 1/289 289 290/289 289/290 1/289 289 290/289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289
Number System If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 86 97 91 94 86 97 91 94 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 692 678 689 652 692 678 689 652 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
EXAMIANS