Number System What is the difference between the local value of 7 and 5 in the number 2574? 430 413 403 570 430 413 403 570 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 500 – 70 = 430
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 116 112 124 120 116 112 124 120 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 35 + 15 * 1.5 = ? 5.25 75 57.5 51.5 5.25 75 57.5 51.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
Number System (12.11)2 + (?)2 = 732.2921 14.2 17.2 24.2 20.2 14.2 17.2 24.2 20.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
Number System The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number? 240 360 295 270 240 360 295 270 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.
Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 77 76 78 75 77 76 78 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
EXAMIANS