Number System If the difference between a number and two-fifths of that number is 45 what is the number ? 78 77 76 75 78 77 76 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x ∴ x - 2x/5 = 45∴ x = 75
Number System Two numbers have a H.C.F of 16 and a product of two numbers is 2560. Find the L.C.M of the two numbers? 160 140 170 150 160 140 170 150 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP L.C.M of two numbers is given by(Product of the two numbers) / (H.C.F of the two numbers) = 2560/16 = 160.
Number System ?125÷5x ?=6265 124 153 1253 1452 124 153 1253 1452 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 10 16 12 14 10 16 12 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
Number System A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 84 42 24 21 84 42 24 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ? 24.84 21.84 27.84 25.84 24.84 21.84 27.84 25.84 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x(8 - 3)% = 39x = 3900/5 = 780∴ 2.8% of 780= 780 x 2.8/100 = 21.84
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