Number System Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number 7.5 5 4 15 7.5 5 4 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5
Number System If the sum of one-half of a number exceeds one-third of that number by 7 1/3, the number is: 15 30 20 18 15 30 20 18 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 In a division sum, the remainder is 0. As student mistook the divisor by 12 instead of 21 and obtained 35 as quotient. What is the correct quotient? 13 0 20 12 13 0 20 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 61 65 69 74 61 65 69 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System If 2^(2x-1) = 8^(3-x), then the value of x is: 9 2 6 5 9 2 6 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2
Number System 36% of 850+? % of 592 = 750 25 50 12.5 75 25 50 12.5 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
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