Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 88 40 80 44 88 40 80 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System √207.36 = ? 14.4 12.3 15.7 16.7 14.4 12.3 15.7 16.7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √207.36 = √20736/√100 = 144/10 = 14.4
Number System 5525 ÷ 17 = √? 112225 99225 93025 105625 112225 99225 93025 105625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System 50% of 8/15 of 9/4 of 5/3 of 333 = ? 666 555 333 444 666 555 333 444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 724 636 845 673 724 636 845 673 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System How many numbers up to 100 and 300 are divisible by 11? 18 21 22 20 18 21 22 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
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