Number System If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 97 94 86 91 97 94 86 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
Number System The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is: 3/5 3/10 5/4 4/5 3/5 3/10 5/4 4/5 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 Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers? 12, 7 10, 5 11, 6 12, 9 12, 7 10, 5 11, 6 12, 9 ANSWER DOWNLOAD EXAMIANS APP
Number System 35%of ?=242 542 693 487 394 542 693 487 394 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 7 3 9 5 7 3 9 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 720 780 840 660 720 780 840 660 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
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