Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 124 163 146 179 124 163 146 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 4500 * ? = 3375 2/5 3/4 1/4 3/5 2/5 3/4 1/4 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4500 * x = 3375= x = 3375/4500 = 3/4
Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 363 343 373 353 363 343 373 353 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System What number should come in the place of (?) in the following number series ? 1, 4, 9, 25, 49, ?, 169, 289, 361 225 121 321 11 225 121 321 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is (Prime No.)²So it is (11)² = 121
Number System ?125÷5x ?=6265 124 1452 1253 153 124 1452 1253 153 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System What is the least number that should be added to 5200 to make it a perfect square ? 129 288 225 275 129 288 225 275 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP We sec (73)² = 5329 and (72)² = 5184ie 5329 > 5200 > 5184So 129 should be added to make is perfect square.
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