Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 10 12 14 16 10 12 14 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System 5358 * 51 = ? 273268 273358 273348 273258 273268 273358 273348 273258 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System (4300731) - ? = 2535618 1865113 1675123 1765113 1775123 1865113 1675123 1765113 1775123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4300731 - x = 2535618Then, x = 4300731 - 2535618 = 1765113
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 114 104 315 325 114 104 315 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
Number System Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ? Rs. 4000 Rs. 2000 Rs. 5000 Rs. 3000 Rs. 4000 Rs. 2000 Rs. 5000 Rs. 3000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3 = 5000
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 252 388 296 344 252 388 296 344 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.