Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43893 70983 43983 43883 43893 70983 43983 43883 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 120 30 55 None of these 120 30 55 None of these ANSWER DOWNLOAD EXAMIANS APP
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 The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 40 37 39 38 40 37 39 38 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System In how many different ways can the letters of the word 'FRUGAL'be arranged ? 556 720 515 660 556 720 515 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In FRUGAL there ae six difference letters Therefore, 6 ! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System What is the sum of all the numbers between 300 and 1000 which are divisible by 179? 2517 2527 2506 2607 2517 2527 2506 2607 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 358/179 ….. 895/179179(2 + 3 + 4 + 5) => 2506
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