Number System Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers? 12, 7 10, 5 11, 6 12, 9 12, 7 10, 5 11, 6 12, 9 ANSWER DOWNLOAD EXAMIANS APP
Number System Supply the missing figure : 3, 11, 8, 16, 13 .... 18 28 18 21 12 28 18 21 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System 16.23 x 12.9 + 17.32 = ? 246.687 236.687 None of these 226.687 246.687 236.687 None of these 226.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System The peresent age of the father and the son are in the ratio of 8:3. After 12 years the ratio of their ages will be 2:1. What is the sum of the present age of the father and the son ? 68 years 66 years 69 years 67 years 68 years 66 years 69 years 67 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the present age of the father be 'x' and that of the son be 'y'. Then x/y = 8/3∴ 3x = 8y Further, x + 12/y + 12 = 2/1 ∴ x + 12 = 2y + 24 ∴ x - 2y = 12 ......(ii)From eqn (i) and (ii), x = 48, y = 18 ∴ sum = 66 yrs.
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 45 65 35 55 45 65 35 55 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System What is the sum of all the composite numbers up to 20? 130 131 128 132 130 131 128 132 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
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