Number System 1051.64 - 159.42 - 96.84 + 162.37 - 940.26 + 504 = ? 521.49 491.49 511.49 501.49 521.49 491.49 511.49 501.49 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1718.01 - 1196.52 = 521.49
Number System A basket contains 5 blue, 4 green and 3 red ball. If three balls are picked at random, what is the probability that at least one is red ? 31/58 37/52 34/55 32/51 31/58 37/52 34/55 32/51 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Probability of having no red ball is9C3 / 12C3 = 21/55Probability of having at least one red ball is 1 - 21/55 = 34/55
Number System How many numbers up to 100 are divisible by 7? 100 107 14 93 100 107 14 93 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System (164 x 175) x ? = 258300 11 5 2 9 11 5 2 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 258300 / 164 x 175 = 9
Number System Twenty times a positive integer is less than its square by 96. What is the integer? Cannot be determined 24 30 20 Cannot be determined 24 30 20 ANSWER DOWNLOAD EXAMIANS APP
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? None 4 2 6 None 4 2 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
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