Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 120 60 260 180 120 60 260 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 3x/4 = 10800= x² = 10800 x 4/3 = 14400∴ x = √14400 = 120
Number System If the difference between a number and its three fifths is 62, what is the number ? 155 145 165 175 155 145 165 175 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System If one third of 3/4 of a number is 21. Then find the number? 84 840 630 63 84 840 630 63 ANSWER DOWNLOAD EXAMIANS APP
Number System The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ? 145314 145714 145914 145214 145314 145714 145914 145214 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Population of the town= 168480 x 115/100 x 75/100= 145314
Number System The number of prime factors of (6)10×(7)17×(55)27 41 101 61 91 41 101 61 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System (4.6 x 2.8 x 5.5) - (3.2 x 4.5 x 2.8) = ? 29.81 28.56 30.52 27.54 29.81 28.56 30.52 27.54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (4.6 x 2.8 x 5.5) - (3.2 x 4.5 x 2.8) = 70.84 - 40.32 = 30.52
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