Number System A certain number when divided by 39 leaves a remainder 20, what is the remainder when the same number is divided by 13? 11 0 7 5 11 0 7 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39 + 20 = 59/13 = 7 (Remainder)
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 252 344 296 388 252 344 296 388 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four numbers be x, x + 2, x + 4 and x + 6.=> x + x + 2 + x + 4 + x + 6 = 36=> 4x + 12 = 36 => x = 6The numbers are 6, 8, 10 and 12.Sum of their squares = 62 + 82 + 102 + 122 = 36 + 64 + 100 + 144 = 344.
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 30 years 28 years 31 years 29 years 30 years 28 years 31 years 29 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 If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 81 84 83 82 81 84 83 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6048 5084 6084 6184 6048 5084 6084 6184 ANSWER DOWNLOAD EXAMIANS APP
Number System 36% of 850+? % of 592 = 750 50 25 75 12.5 50 25 75 12.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
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