Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 120 55 None of these 30 120 55 None of these 30 ANSWER DOWNLOAD EXAMIANS APP
Number System The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ? 245 141 162 188 245 141 162 188 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 (4300731) - ? = 2535618 1865113 1765113 1775123 1675123 1865113 1765113 1775123 1675123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4300731 - x = 2535618Then, x = 4300731 - 2535618 = 1765113
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 17 15 16 18 17 15 16 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 7 12 60 8 7 12 60 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System The average of five consecutive even numbers A, B, C, D and E is 42. What is the product of B and D ? 3289 4589 1760 2476 3289 4589 1760 2476 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E/5 = 42∴ C = 42, ∴ B = 40, ∴ D = 44∴ B x D = 40 x 44 = 1760
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