Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 220 225 232 245 220 225 232 245 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
Number System What is the least number that should be added to 5200 to make it a perfect square ? 129 225 288 275 129 225 288 275 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.
Number System 7.8 x 4.5 x 4.2/0.14 = ? 1032 1012 1053 1087 1032 1012 1053 1087 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 4.5 x 4.2/0.14 = 1053
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 8 6 3.5 None of these 8 6 3.5 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 56 36 48 52 56 36 48 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 42 41 39 40 42 41 39 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
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