Number System If R2 = S3 = K, where R, S and K are integers. Find the smallest positive integral value of K. (Greater than 1) 75 54 88 64 75 54 88 64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 64
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 30 27 18 36 30 27 18 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System If 5/7 of a number is 145, what is 180% of that number ? 365.4 375.4 355.4 345.4 365.4 375.4 355.4 345.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 5/7 = 145∴ x = 145 x 7/5 = 203Now, 203 x 180/100 = 365.4
Number System (4 86%of 6500) ÷ 36 =? 777.5 877.5 677.5 977.5 777.5 877.5 677.5 977.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System The sum of four consecutive even numbers is 36. Find the sum of the squares of these numbers? 296 252 388 344 296 252 388 344 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four numbers be x, x + 2, x + 4 and x + 6.=> x + x + 2 + x + 4 + x + 6 = 36=> 4x + 12 = 36 => x = 6The numbers are 6, 8, 10 and 12.Sum of their squares = 62 + 82 + 102 + 122 = 36 + 64 + 100 + 144 = 344.
Number System [(18.6 x 4.5) + (7.8 ÷ 0.24)] ÷ 3.2 = ? 25.3125 26.3125 36.3125 46.3125 25.3125 26.3125 36.3125 46.3125 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 83.7 + 32.5/3.2 = 116.2/3.2 = 36.3125
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