Number System The sum of five consecutive numbers is 190. What is the sum of the largest and the smallest number ? 76 75 74 73 76 75 74 73 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + x + 1 + x + 2 + x + 3 + x + 4= 190= 5x + 10 = 190= 5x = 190 - 10 = 180= x = 180/5 = 36The largest number = 36 + 4 = 40∴ Required sum = 36 + 40 = 76
Number System A gardener wants to plant trees in his garden in such a way that the number of trees in each row should be the same. If there are 4 rows or 5 rows or 6 rows, then no tree will be left. Find the least 60 30 120 240 60 30 120 240 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The least number of trees that are required = LCM(4, 5, 6) = 60.
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 84.5 82.5 85.5 83.5 84.5 82.5 85.5 83.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 126 148 248 210 126 148 248 210 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 2 4 6 None 2 4 6 None ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 5084 6084 6184 6048 5084 6084 6184 6048 ANSWER DOWNLOAD EXAMIANS APP
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