Number System Which choice provides the answer in the following : If 2 * 3 = 36, 5 * 4 = 400, 6 * 2 = 144, 3 * 3 = 81; then, 5 * 5 = ? 325 425 525 625 325 425 525 625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 625
Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 225 245 275 295 225 245 275 295 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
Number System A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: 42 81 18 24 42 81 18 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's and unit's digit be x and 8/x respectively. Then, (10x + 8/x) + 18 = 10 * 8/x + x 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2 So, ten's digit = 2 and unit's digit = 4. Hence, required number = 24.
Number System How many figures are required to number the pages the pages of a book containing 365 pages? 897 987 967 977 897 987 967 977 ANSWER DOWNLOAD EXAMIANS APP
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 5/4 11/13 1/3 7/9 5/4 11/13 1/3 7/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System (4 86%of 6500) ÷ 36 =? 677.5 877.5 777.5 977.5 677.5 877.5 777.5 977.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
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