Number System If a number is multiplied by. three-fourth of itself, the value thus obtained is 10800. What is that number ? 180 260 60 120 180 260 60 120 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 A number when, 28 subtracted from it reduces to its one third. What is the value of 50% of that number? 42 24 84 21 42 24 84 21 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2/3 x = 28 => x = 4242 * 1/2 = 21
Number System A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ? 32/51 34/55 37/52 31/58 32/51 34/55 37/52 31/58 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 11/13 7/9 5/4 1/3 11/13 7/9 5/4 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System 93296 - 45874 + 20382 - 56817 = ? 109877 109867 109887 109857 109877 109867 109887 109857 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
Number System 84 * 29 + 365 = ? - 2801 2801 - 2071 2436 - 2801 2801 - 2071 2436 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP - 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071
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