Number System 486+32×25—59=? 596 582 567 528 596 582 567 528 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System The average of five consecutive even numbers A, B, C, D and E is 54. What is the product of'B' and 'E' ? 3016 1456 4098 2871 3016 1456 4098 2871 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because, The even numbers are consecutive and their average is 54.∴ The number C will be 54.∴ A = 50, B = 52, D = 56, E = 58B x E = 52 x 58 = 3016
Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 9 13 11 1 9 13 11 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System The square root of 0.0081 is: 0.09 0.9 0.91 0.009 0.09 0.9 0.91 0.009 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 0.09
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 ? 58/340 39/340 51/340 45/340 58/340 39/340 51/340 45/340 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 In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? Data inadequate 1/25 1/5 2/5 Data inadequate 1/25 1/5 2/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
EXAMIANS