Number System In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ? 28 18 22 24 28 18 22 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28
Number System The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is: 16 10 12 15 16 10 12 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 124 163 146 179 124 163 146 179 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 Find the number of factors of 300 excluding 1 and itself. 18 16 14 15 18 16 14 15 ANSWER DOWNLOAD EXAMIANS APP
Number System 63.602 + 153.756 + 94.754 - 84.321 - 122.204 = ? 140.587 143.587 142.587 141.587 140.587 143.587 142.587 141.587 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 312.112 - 170.525 = 141.587
Number System 3√103823 = ? 41 44 47 52 41 44 47 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
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