Number System 5358 * 51 = ? 273268 273358 273348 273258 273268 273358 273348 273258 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
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: 24 81 42 18 24 81 42 18 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 What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 70983 43883 43893 43983 70983 43883 43893 43983 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
Number System 148 x 3.75 x 4 = 111 x ? 24 17 19 20 24 17 19 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 148 x 3.75 x 4/111 = 20
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 48619 47649 47719 47619 48619 47649 47719 47619 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
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? 3 5 9 7 3 5 9 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
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