Number System Find the least value of 3x + 4y if x2y3 = 6. 6 3 10 7 6 3 10 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System 16.23 x 12.9 + 17.32 = ? 236.687 None of these 246.687 226.687 236.687 None of these 246.687 226.687 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 16.23 x 12.9 + 17.32= 209.367 + 17.32= 226.687
Number System If x + y = 61 and xy = 888, What is the value of x²+ y² ? 1975 1965 1955 1945 1975 1965 1955 1945 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because (x + y)² = x² + y² + 2xy∴ x² + y² = (x + y)² - 2xy∴ x² + y² = (61)² - 2 x 888= 3721 - 1776 = 1945
Number System What is the sum of all the composite numbers up to 20? 130 132 131 128 130 132 131 128 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4 + 6 + 8 + 9 + 10 + 12 + 14 + 15 + 16 + 18 = 132
Number System 68375 + 72848 - ? = 34346 + 49569 57308 59308 None of these 58308 57308 59308 None of these 58308 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 68375 + 72848 - 34346 - 49569 = 141223 - 83915 = 57308
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 91 86 97 94 91 86 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
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