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 ? 32/51 31/58 37/52 34/55 32/51 31/58 37/52 34/55 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 If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 93/77 73/77 83/77 77/73 93/77 73/77 83/77 77/73 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System If the three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 692 652 678 689 692 652 678 689 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ? Rs. 2000 Rs. 5000 Rs. 4000 Rs. 3000 Rs. 2000 Rs. 5000 Rs. 4000 Rs. 3000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3 = 5000
Number System What is the value of 8/11 of 5/7 of 96% of 28875 ? 14400 15400 12900 13800 14400 15400 12900 13800 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = 8 x 5 x 96 x 28875/11 x 7 x 100 = 14400
Number System (4 86%of 6500) ÷ 36 =? 877.5 677.5 777.5 977.5 877.5 677.5 777.5 977.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
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