Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 8 3.5 6 None of these 8 3.5 6 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5. 187 197 219 207 187 197 219 207 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 20160 18456 17453 19765 20160 18456 17453 19765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 103 97 99 101 103 97 99 101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System The average of 7 consecutive even numbers A, B, C, D, E, F and G is 36. What is the product of ' C and 'E' ? 1327 1292 1468 1168 1327 1292 1468 1168 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A + B + C + D + E + F + G/7 = 36Therefore, D = 36Therefore, C = 34, E = 38Therefore, Product = 34 x 38 = 1292
Number System 1089/? = ?/1296 1348 1188 1082 1278 1348 1188 1082 1278 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188
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