Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 83 82 84 81 83 82 84 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System Two-third of a positive number and 25/216 of its reciprocal are equal. The number is: 144/25 5/12 12/5 25/144 144/25 5/12 12/5 25/144 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,2/3 x = 25/216 * 1/xx2 = 25/216 * 3/2 = 25/144 x = 5/12
Number System (95.6x 910.3) ÷ 92.56256 = 9? 15.54 14.44 13.34 12.24 15.54 14.44 13.34 12.24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 13.34
Number System 450% of a number is 4725. What is 82% of that number ? 851 871 861 841 851 871 861 841 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x x 450/100 = 4725= x = 4725 x 100/450 = 1050∴ 82% of 1050 = 1050 x 82/100= 861
Number System A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by: 3 9 11 5 3 9 11 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.
Number System The Twenty-First Century will start on January 1 in the year 2100 2000 2001 2101 2100 2000 2001 2101 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 2001
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