Number System The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ? 188 245 141 162 188 245 141 162 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.45% of x - 18% of x = 145.8∴ x/100 (45 - 18) = 145.8∴ x = 145.8 x 100/27 = 540∴ 30% of 540 = 540 x 30/100 = 162
Number System (12.04 x 7.5 + 0.8 x 45) ÷ 3 = ? 42.6 42.1 54.7 45 42.6 42.1 54.7 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (90.3 + 36) ÷ 3 = 126.3/3 = 42.1
Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 75 78 77 76 75 78 77 76 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 26 23 25 24 26 23 25 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System √9216 + √15376 = ? 224 227 231 220 224 227 231 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
Number System What should come in the place of question mark (?) in the number series given below? 159 158 157 160 159 158 157 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
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