Number System If a number is subtracted from its square we get 272. Find the number? 24 22 14 17 24 22 14 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System √360 - 225 x 2 + 379 = ? 17 19 18 20 17 19 18 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 343 382 396 378 343 382 396 378 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System If the fractions 1/7, 3/5, 2/5, 5/6 and 9/11 are arranged in descending order of their values, which one will be the fourth number? 1/5 2/5 4/5 3/5 1/5 2/5 4/5 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/4 = 14. 3/5 = 6.2/5 = 4.5/6 = 83.9/11 = 82.Therefore, 83 > 82 > 6 > 14
Number System What number should replace both the question marks (?) in the following question ? 83 85 84 82 83 85 84 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System In how many different ways can the letters of the word ANATOMY be arranged ? 2520 2504 2510 2508 2520 2504 2510 2508 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Here total letters are 7 but A comes twice.Therefore, Numbers of arrangements = 7!/2! = 2520
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