Number System If 5/7 of a number is 145, what is 180% of that number ? 365.4 345.4 355.4 375.4 365.4 345.4 355.4 375.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
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 51/340 39/340 45/340 58/340 51/340 39/340 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 By how much is 3/5th of 875 greater than 2/3 of 333? 303 362 233 199 303 362 233 199 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/5th of 875 is greater than 2/3rd of 333= 3/5 * 875 - 2/3 * 333= 525 - 222 = 303.
Number System A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform? Rs.100 Rs.85 Rs.80 Rs.90 Rs.100 Rs.85 Rs.80 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
Number System The sum of the numbers is 264. If the first number be twice the second and third number be one-third of the first, then the second number is: 48 84 72 54 48 84 72 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the second number be x. Then, first number = 2x and third number = 2x/3.2x + x + 2x/3 = 26411x/3 = 264x = 72
Number System ?2704 x ?2209=? 2444 1444 4444 3444 2444 1444 4444 3444 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2444
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