Number System If the difference between a number and its three fifths is 62, what is the number ? 145 155 165 175 145 155 165 175 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 20 21 23 22 20 21 23 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System 50% of 8/15 of 9/4 of 5/3 of 333 = ? 333 444 666 555 333 444 666 555 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333
Number System What is the difference between the largest number and the least number written with the figures 3, 4, 7, 0, 3? 43893 43983 70983 43883 43893 43983 70983 43883 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 74330 Largest30347 Smallest-------------43983
Number System A number when divided by 221 gives a remainder 43, what remainder will be obtained by dividing the same number 17? 11 9 5 10 11 9 5 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 221 + 43 = 264/17 = 9 (Remainder)
Number System An urn contains 9 blue, 7 white and 4 black balls. If 2 balls are drawn at random, then what is the probability that only one ball is white ? 92/190 90/190 91/190 89/190 92/190 90/190 91/190 89/190 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total possible outcomes = 20C2 = 20 x 19/1 x 2 = 190Total favourable outcomes = 7C1 x 13C1 = 7 x 13 = 91∴ Required probability = 91/190
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