Number System Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers? 12, 9 12, 7 10, 5 11, 6 12, 9 12, 7 10, 5 11, 6 ANSWER DOWNLOAD EXAMIANS APP
Number System √360 - 225 x 2 + 379 = ? 18 19 20 17 18 19 20 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 24 30 27 22 24 30 27 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System 64% of 2650+40% 0f 320=? 1578 1824 2096 1247 1578 1824 2096 1247 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1824
Number System 17580 x 1.8 - 13720 x 2.1 = ? x 2.4 1140 1180 1160 1120 1140 1180 1160 1120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2.4 x ? = 31644 - 28812 = 2832∴ ? = 2832/2.4= 1180
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
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