Number System 124, 235, 447, 760, 1174, ? 1489 1689 1589 1389 1489 1689 1589 1389 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP +111, +212, +313, +414
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 8 60 12 7 8 60 12 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 42 41 40 39 42 41 40 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43883 43893 43983 70983 43883 43893 43983 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 ? 32/51 31/58 37/52 34/55 32/51 31/58 37/52 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
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 56 52 48 36 56 52 48 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
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