Number System Simplify the 121 * 175 + 363 * 275 328100 316600 363000 None of these 328100 316600 363000 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
Number System What is the least number to be subtracted from 696 to make it a perfect square? 1 16 20 71 1 16 20 71 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The numbers less than 696 and are squares of certain numbers are 676, 625.The least number that should be subtracted from 696 to make it perfect square = 696 - 676 = 20.
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 625 824 920 712 625 824 920 712 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
Number System The square root of 0.0081 is: 0.91 0.009 0.9 0.09 0.91 0.009 0.9 0.09 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 25.84 24.84 21.84 27.84 25.84 24.84 21.84 27.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
Number System √9216 + √15376 = ? 227 220 231 224 227 220 231 224 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
EXAMIANS