Number System Find the least value of 3x + 4y if x2y3 = 6. 10 3 6 7 10 3 6 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 3/5 5/4 4/5 3/10 3/5 5/4 4/5 3/10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1/x - x = 9/20 20x2 + 9x - 20 = 0 20x2 + 25x - 16x - 20 = 0 5x(4x + 5) -4(4x + 5) = 0(4x + 5)(5x - 4) = 0x = 4/5
Number System If A = 1, B = 3, C = 5 and so on, what do the numbers 3, 9, 7 stand for CAT BED BAT CAR CAT BED BAT CAR ANSWER EXPLANATION DOWNLOAD EXAMIANS APP BED
Number System The sum of two numbers is 22. Five times one number is equal to 6 times the other. The bigger of the two numbers is: 12 10 16 15 12 10 16 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and (22 - x). Then,5x = 6(22 - x) 11x = 132 => x = 12So, the numbers are 12 and 10.
Number System The difference between 68% of a number and 35% of the same number is 1216. What is 28% of the number ? 1031.75 1027.75 1043.75 1037.75 1031.75 1027.75 1043.75 1037.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore 68x / 100 - 35x / 100 = 1216 Therefore x = 1216 x 100 / 33Therefore 28% of x = 28x / 100 = 1216 x 100 / 33 x 28 / 100= 1216 x 100 x 28 / 33 x 1/100 = 1031.75
Number System On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is: 13 11 10 12 13 11 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Clearly, (2272 - 875) = 1397, is exactly divisible by N.Now. 1397 = 11 * 127The required 3-digit number is 127, the sum of whose digit is 10.
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