Number System What is the sum of all the prime numbers from 20 to 40? 119 120 118 117 119 120 118 117 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
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 ? 220 245 225 232 220 245 225 232 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
Number System 3√103823 = ? 41 47 52 44 41 47 52 44 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System What is the difference between the largest and the smallest number written with 7, 7, 0, 7? 6993 6893 693 6093 6993 6893 693 6093 ANSWER DOWNLOAD EXAMIANS APP
Number System If the numerator of a fraction is increased by 200% and the denominator by 300%, the fraction thus obtained is 1/36. What is the original fractions ? 3/9 4/9 6/9 5/9 3/9 4/9 6/9 5/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fractions be x/yx + 200% of x/y + 300% of y = 1/3= x + 2x/y + 3y = 1/3= 3x/4y = 1/3Hence x/y = 4/9
Number System What is the least number, which is perfect square but contains 2700 as its factor? 2700 5400 1800 10800 2700 5400 1800 10800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 900 * 3 * 3 = 8100
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