Number System If one-seventh of a number is 55 then 40% of that number = ? 171 163 147 154 171 163 147 154 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x , Therefore, x/7 = 55Therefore, x = 55 x 7 = 385Therefore, 49% of 385 = 154
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 36 27 18 30 36 27 18 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System On converting the following base-2 numeral in base ten, 1101101, we get 106 109 107 108 106 109 107 108 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 11 121 321 225 11 121 321 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 16 12 14 10 16 12 14 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System (12)² - (4.4)² - (0.04)² = ? 124.6384 129.6384 125.6384 131.6384 124.6384 129.6384 125.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
EXAMIANS