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? 5 7 3 9 5 7 3 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
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 ? 4589 3289 2476 1760 4589 3289 2476 1760 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
Number System (164 x 175) x ? = 258300 9 11 2 5 9 11 2 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 258300 / 164 x 175 = 9
Number System The difference between two integers is 5. Their product is 500. Find the numbers. 20, 25 30, 25 15, 20 21, 26 20, 25 30, 25 15, 20 21, 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 95 92 99 103 95 92 99 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System (444 x 44 x 4) ÷ 40 ? 2053.6 2153.6 1853.6 1953.6 2053.6 2153.6 1853.6 1953.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 444 x 44 x 4/40 = 1953.6
EXAMIANS