Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 23 20 22 21 23 20 22 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System What is the least number that should be added to 5200 to make it a perfect square ? 275 129 288 225 275 129 288 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.
Number System What is the remainder when 263251 is divided by 9? 6 8 3 1 6 8 3 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 12 28 160 180 12 28 160 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 9 7 2 3 9 7 2 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is: 15 12 10 16 15 12 10 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.
EXAMIANS