Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2510 2520 2504 2508 2510 2520 2504 2508 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System The average age of seven boys sitting in a row facing North is 26 years. If the average age of first three boys is 19 years and the average age of last three boys is 32 years, what is the age of the b 28 years 30 years 29 years 31 years 28 years 30 years 29 years 31 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Age of the fourth boy = (26 x 7 - 3 x 19 - 3 x 32) years = (182 - 57 - 96) years = 29 years
Number System Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is 56 38 72 44 56 38 72 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 72
Number System (2560 x 1.4) +(7400 x 0.6) =? 6543 9160 8024 7234 6543 9160 8024 7234 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8024
Number System The sum of the ages of a son and father is 65 years. After 5 years the age of father will be double of the age of son. What is the age of son ? 17 years 19 years 20 years 18 years 17 years 19 years 20 years 18 years ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the age of the son be x and the age of the father be y.Therefore, x + y = 65 ..........(i)or, 2 x (x + 5) = (y + 5)or, 2x + 10 = y + 5or, 2x - y = 5 ...................(ii)From equations (i) and (ii), x = 20, y = 45
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 17453 19765 20160 18456 17453 19765 20160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
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