Number System On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is: 10 13 11 12 10 13 11 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Clearly, (2272 - 875) = 1397, is exactly divisible by N.Now. 1397 = 11 * 127The required 3-digit number is 127, the sum of whose digit is 10.
Number System 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 6080 5800 6000 5976 6080 5800 6000 5976 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 3 9 7 2 3 9 7 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System (4 86%of 6500) ÷ 36 =? 777.5 977.5 877.5 677.5 777.5 977.5 877.5 677.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
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: 18 24 42 81 18 24 42 81 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 The difference between a number and its three-fifth is 50. What is the number? 125 None of these 100 75 125 None of these 100 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.
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