Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 20160 19765 18456 17453 20160 19765 18456 17453 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 6 4 2 None 6 4 2 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 If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 83 81 84 82 83 81 84 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System Three seventh of a number is 12 more than 40% of that number. What will be the 60% of that number? 126 148 210 248 126 148 210 248 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/7 x – 40/100 x = 12x = 35 * 1235 * 12 * 60/100 = 252/2 = 126
Number System Which is the smallest fractions among the following ? 11/13 27/31 13/15 15/19 11/13 27/31 13/15 15/19 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 104 315 114 325 104 315 114 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
EXAMIANS