Number System Find the least value of 3x + 4y if x2y3 = 6. 3 6 10 7 3 6 10 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System The sum of the two numbers is 12 and their product is 35. What is the sum of the reciprocals of these numbers? 7/32 1/35 12/35 35/8 7/32 1/35 12/35 35/8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,a + b = 12 and ab = 35.(a + b)/ab = 12/35= (1/b + 1/a) = 12/35Sum of reciprocals of given numbers = 12/35.
Number System √(17)² + (17)² + (5)² - 2 = ? 18 19 17 16 18 19 17 16 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √49 + 289 + 25 - 2 = √361 = 19
Number System The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ? 2 1 3 4 2 1 3 4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (10x + y) - (10y + x) = 36,9(x - y) = 36/9 = 4
Number System (3² x 4² x 5) ÷ 36 = (?)² - 80 12 14 16 10 12 14 16 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10
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