Number System Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 64, 16 62, 18 65, 15 60, 20 64, 16 62, 18 65, 15 60, 20 ANSWER DOWNLOAD EXAMIANS APP
Number System What is the value of ? in the following equations ? 72/? = ?/50 80 100 40 60 80 100 40 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
Number System 217 * 217 + 183 * 183 = ? 79698 80578 81268 80698 79698 80578 81268 80698 ANSWER DOWNLOAD EXAMIANS APP
Number System If the sum of 4 consecutive odd numbers is 104, what will be the third number if they are arranged in ascending order ? 27 29 30 28 27 29 30 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive odd number be x, x + 2, x + 4 and x + 6 respectively.According to the question x + x + 2 + x + 4 + x + 6 = 104 = 4x + 12 = 104 = 4x = 104 - 12 = 92∴ x = 92/4 = 23∴ Required number = x + 4= 23 + 4 = 27
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43983 43893 43883 70983 43983 43893 43883 70983 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
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 ? 37/52 32/51 31/58 34/55 37/52 32/51 31/58 34/55 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
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