Number System If the difference between a number and its 2/5 is 240, find the number. 480 440 360 400 480 440 360 400 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 (12)² - (4.4)² - (0.04)² = ? 129.6384 131.6384 125.6384 124.6384 129.6384 131.6384 125.6384 124.6384 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 20% of the total number of students in a school play football. How many students do not play football if the total number of students in the school is 7600 ? 5976 5800 6080 6000 5976 5800 6080 6000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 20% of 7600 = 1520Therefore, students who do not play football = 7600 - 1520 = 6080
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 45 44 46 47 45 44 46 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System If the fractions 1/7, 3/5, 2/5, 5/6 and 9/11 are arranged in descending order of their values, which one will be the fourth number? 1/5 4/5 3/5 2/5 1/5 4/5 3/5 2/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/4 = 14. 3/5 = 6.2/5 = 4.5/6 = 83.9/11 = 82.Therefore, 83 > 82 > 6 > 14
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