Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 77 78 76 75 77 78 76 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System √9216 + √15376 = ? 224 231 227 220 224 231 227 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
Number System 1051.64 - 159.42 - 96.84 + 162.37 - 940.26 + 504 = ? 511.49 521.49 491.49 501.49 511.49 521.49 491.49 501.49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1718.01 - 1196.52 = 521.49
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 90 69 72 42 90 69 72 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 3 9 7 5 3 9 7 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System If A + B = 30 and AB = 94, What is the value of A² + B² ? 920 625 824 712 920 625 824 712 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (A + B)² = (30)² = 900A² + B² + 2AB = 900Therefore, A² + B² = 900 - 2 x 94 = 900 - 188 = 712
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