Number System (12)² - (4.4)² - (0.04)² = ? 129.6384 124.6384 125.6384 131.6384 129.6384 124.6384 125.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 35 45 65 55 35 45 65 55 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System What is the difference between the largest number and the least number written with the digits 7, 3, 1, 4? 6084 6184 6048 5084 6084 6184 6048 5084 ANSWER DOWNLOAD EXAMIANS APP
Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 60 180 260 120 60 180 260 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
Number System 728.038 x 54.978 - 72.016 x 85.250 = ? 33900 43900 53900 23900 33900 43900 53900 23900 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 728 x 55 - 72 x 85.25 = 40040 - 6138 = 339900
Number System The difference between a two-digit number and the number obtained by interchanging the two digits is 63. Which is the smaller of the two numbers? 70 29 Cannot be determined 92 70 29 Cannot be determined 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and units digit by y.Then,(10x + y) - (10y + x) = 639(x - y) = 63x - y = 7Thus, none of the numbers can be determined.
EXAMIANS