Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 6 None of these 3.5 8 6 None of these 3.5 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System (12.04 x 7.5 + 0.8 x 45) ÷ 3 = ? 42.1 45 54.7 42.6 42.1 45 54.7 42.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (90.3 + 36) ÷ 3 = 126.3/3 = 42.1
Number System 5358 * 51 = ? 273358 273268 273258 273348 273358 273268 273258 273348 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5358 * 51 = 5358 * (50 + 1) = 5358 * 50 + 5358 * 1= 267900 + 5358 = 273258
Number System 36% of 850+? % of 592 = 750 12.5 50 75 25 12.5 50 75 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 124 163 146 179 124 163 146 179 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 A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder? 33 36 34 35 33 36 34 35 ANSWER DOWNLOAD EXAMIANS APP
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