Number System (12)² - (4.4)² - (0.04)² = ? 124.6384 125.6384 129.6384 131.6384 124.6384 125.6384 129.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System Find the smallest number which should be multiplied with 520 to make it a perfect square. 30 120 None of these 55 30 120 None of these 55 ANSWER DOWNLOAD EXAMIANS APP
Number System 3√103823 = ? 44 52 41 47 44 52 41 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 3√103823 = 3√47 x 47 x 47 = 47
Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 45 22 1/2 30 40 45 22 1/2 30 40 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ? 1/5 7/5 8/5 3/5 1/5 7/5 8/5 3/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175 = 8/5
Number System (√6 + 1)² = ? + 2√6 5 7 6 8 5 7 6 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (√6 + 1)² - 2√6= (√6)² + 2 x √6 + 1 + 1² - 2√6= 6 + 2√6 + 1 - 2√6 = 6 + 1 = 7
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