Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 652 692 689 678 652 692 689 678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 65 55 35 45 65 55 35 45 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 17580 x 1.8 - 13720 x 2.1 = ? x 2.4 1180 1120 1140 1160 1180 1120 1140 1160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180
Number System Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is 8.784 8.584 8.684 8.484 8.784 8.584 8.684 8.484 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8.484
Number System If the difference between a number and its 2/5 is 240, find the number. 440 360 480 400 440 360 480 400 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore x - 2x/5 = 240, Therefore, 3x/5 = 240Therefore, x = 240x5/3 = 400
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 986 Rs. 926 Rs. 945 Rs. 1054 Rs. 986 Rs. 926 Rs. 945 Rs. 1054 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
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