Number System If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is: 20 15 18 30 20 15 18 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,(1/2 x + 1/5 x) - 1/3 x = 22/311/30 x = 22/3x = 20
Number System Twenty times a positive integer is less than its square by 96. What is the integer? 30 20 Cannot be determined 24 30 20 Cannot be determined 24 ANSWER DOWNLOAD EXAMIANS APP
Number System Thrice the square of a natural number decreased by 4 times the number is equal to 50 more than the number. The number is: 4 6 10 5 4 6 10 5 ANSWER DOWNLOAD EXAMIANS APP
Number System The sum of a number and its reciprocal is one-eighth of 34. What is the product of the number and its square root? 32 27 None of these 8 32 27 None of these 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,x + 1/x = 34/8 8x2 - 34x + 8 = 0 4x2 - 17x + 4 = 0 (4x - 1)(x - 4) = 0 x = 4required number = 4 * √4 = 4 * 2 = 8.
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 144/25 25/144 5/12 12/5 144/25 25/144 5/12 12/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
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