Fractions and Decimals What will be the value of (25.732)² - (15.732)² 420.64 416.64 418.64 414.64 420.64 416.64 418.64 414.64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Can be easily solved with following formula= (25.732 - 15.732 ) x (25.732 + 15.732)=414.64
Fractions and Decimals (0.47 x 0.47 x 0.47 - 0.33 x 0.33 x 0.33) / (0.47 x 0.47 + 0.47 x 0.33 + 0.33 x 0.33) = ? 0.14 0.014 1.4 14 0.14 0.014 1.4 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given expression = [(0.47)³ - (0.33)³] / [(0.47)² + 0.47 x 0.33 + (0.33)²]= [a³ - b³ ] / [ a² + ab + b²] = [(a-b) (a² + ab + b²)] / [(a² + ab + b²)]= (a - b) = (0.47 - 0.33) = 0.14
Fractions and Decimals If x/y = 0.3, then (2x - y)/(2x + y) = ? 0.5 0.15 0.25 0.5 0.5 0.15 0.25 0.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x = 0.3y Then, (y - 2x)/(y + 2x)= y - 2(0.3y)/y + 2(0.3y)= y - 0.6y/y + 0.6y= 0.4y/1.6y= 0.4/1.6 = 0.25
Fractions and Decimals If 12276 / 155 = 79.2 the value of 122.76 / 15.5 is ? 792 7.92 79.2 0.792 792 7.92 79.2 0.792 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 122.76 / 15.50 = 12276/1550= (12276 / 155) x (1/10) = 79.2 / 10 = 7.92
Fractions and Decimals 0.9 x 0.008=? 0.072 None of these 0.00072 0.72 0.072 None of these 0.00072 0.72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 9 x 8=72∴ 0.09 x 0.008 = 0.00072 (Five place of decimal )
Fractions and Decimals 25 / .0005 = ? 500000 500 5000 50000 500000 500 5000 50000 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 25 / .0005= 250000 / 5= 50000
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