Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 640 510 720 860 640 510 720 860 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System What number should replace both the question marks (?) in the following question ? 83 82 85 84 83 82 85 84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2510 2504 2520 2508 2510 2504 2520 2508 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 36 18 27 30 36 18 27 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System The square root of 0.0081 is: 0.009 0.9 0.09 0.91 0.009 0.9 0.09 0.91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 84 42 24 21 84 42 24 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
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