Number System Let R = qs—4. When s=8, R=16. When s=10, R is equal to 20 23 21 22 20 23 21 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21
Number System Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively? 75 65 67 61 75 65 67 61 ANSWER DOWNLOAD EXAMIANS APP
Number System What will be the next number in the following number series ? 182 177 162 191 182 177 162 191 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1² + 1, 3² + 3, 5² + 5, 7² + 7
Number System The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is: 40 None of these 30 20 40 None of these 30 20 ANSWER DOWNLOAD EXAMIANS APP
Number System A canteen requires 17 dozen of eggs per week. How many eggs will it require from January 1 to February 11 ? 1224 987 525 820 1224 987 525 820 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of days from Jan 1 to Feb 11th= 31 + 11 = 42 days = 6 weeks∴ Total eggs =17 x 12 x 6 = 1224
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 45/340 39/340 51/340 58/340 45/340 39/340 51/340 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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