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 15 5 4 7.5 15 5 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5
Number System If 1.5 x= 0.04 y, then the value of (y-x) (y+x) is: 77/73 73/77 93/77 83/77 77/73 73/77 93/77 83/77 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 73/77
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? None 4 2 6 None 4 2 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
Number System 74698 + 365 + 85213 + 95 = ? 160341 160361 160371 160351 160341 160361 160371 160351 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 74698 + 365 + 85213 + 95 = 160371
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? 0 13 12 20 0 13 12 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number = (12 * 35) = 420Correct quotient = 420/21 = 20
Number System What is the value of ? in the following equations ? 72/? = ?/50 40 60 100 80 40 60 100 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 72 x 50= (6 x 6 x 2) x (5 x 5 x 2)= (6 x 5 x 2)² = (60)²∴ ? = 60
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