Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 120 55 30 None of these 120 55 30 None of these ANSWER DOWNLOAD EXAMIANS APP
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 163 124 146 179 163 124 146 179 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System In how many different ways can the letters of the word 'DETERMINE' be arranged ? 63480 62480 60480 61480 63480 62480 60480 61480 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. of arrangements = 9! / 3! Because, E comes 3 times = 60480
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 101 103 97 99 101 103 97 99 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 Find the least value of 3x + 4y if x2y3 = 6. 7 3 6 10 7 3 6 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
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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