Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 47719 47649 48619 47619 47719 47649 48619 47619 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
Number System The difference between a number and its three-fifth is 50. What is the number? 125 100 None of these 75 125 100 None of these 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 25 35 45 54 25 35 45 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 3.5 None of these 6 8 3.5 None of these 6 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System Find the number which multiplied by 15 is increased by 196. 20 26 28 14 20 26 28 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
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