Number System How many numbers up to 100 and 300 are divisible by 11? 20 21 22 18 20 21 22 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (300 – 100)/11 = 200/11 = 18 2/1118 Numbers
Number System 432+2170+35=? 678 494 729 523 678 494 729 523 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 494
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.584 8.784 8.684 8.484 8.584 8.784 8.684 8.484 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 99 95 92 103 99 95 92 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 28 160 12 180 28 160 12 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 225 232 220 245 225 232 220 245 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
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