Number System If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 97 94 91 86 97 94 91 86 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
Number System Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number? 180 160 240 140 180 160 240 140 ANSWER DOWNLOAD EXAMIANS APP
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 3 5 7 9 3 5 7 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 20160 19765 17453 18456 20160 19765 17453 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
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 34/55 31/58 32/51 37/52 34/55 31/58 32/51 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 The square root of 0.0081 is: 0.9 0.09 0.91 0.009 0.9 0.09 0.91 0.009 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
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