Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 353 343 363 373 353 343 363 373 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 146 163 124 179 146 163 124 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ? 84 82 83 81 84 82 83 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (17*17*17) = 2143or x² = 2143 + 4913 = 7056∴ x = 84
Number System What is 25/2% of 482 times of 183 ? 11025.75 11050.75 12025.50 12025.75 11025.75 11050.75 12025.50 12025.75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 25/2% of [482 x 183]= 25/2% of 88206= 25/2 x 88206 / 100= 88206 / 8= 11025.75
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: 18 30 36 27 18 30 36 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System If the difference between a number and its three-fourth is 18, find the number. 57 72 68 61 57 72 68 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
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