Number System Pick the wrong number from the given number series. 3,4,10,33,135,685,4116 33 135 10 685 33 135 10 685 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The correct number is 136.3 x 1 + 1 = 44 x 2 + 2 = 1010 x 3 + 3 = 3333 x 4 + 4 = 136136 x 5 + 5 = 685685 x 6 + 6 = 4116
Number System A bag contains four red, six black and seven green balls. Three balls are drawn randomly. What is the probability that the balls drawn contain exactly two red balls ? 39/340 45/340 51/340 58/340 39/340 45/340 51/340 58/340 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total balls = 4 + 6 + 7 = 17∴ n(S) = 17C1 = 680Two red balls can be selected from four red balls in 4C2 = 6 ways.and the third ball can be selected from the remaining 13 balls in 13C1 = 13 ways.∴ P (E) = 13x6/680 = 39/340
Number System Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is 74 85 110 93 74 85 110 93 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 85
Number System The sum of three consecutive even numbers is 252. What is the sum of the smallest and the largest numbers? 169 170 168 171 169 170 168 171 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 168
Number System The simplest form of 1.5 : 2.5 is : 3 : 5 13 : 11 17 : 19 5 : 7 3 : 5 13 : 11 17 : 19 5 : 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3 : 5
Number System The Twenty-First Century will start on January 1 in the year 2100 2001 2101 2000 2100 2001 2101 2000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
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