Fractions and Decimals Find the integer which when decreased by 2 is 80 times the reciprocal of the same number 11 12 13 10 11 12 13 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be X Decreasing 2 from XX - 2 = 80 x (1/X)X^2 - 2X = 80X^2 -2x -80 = 0(X-10)(X+8) = 0x=10,-8X has two values, but among the given options X value should be 10
Fractions and Decimals Find the sum 3/10 + 5/100 + 8/1000 in decimal form ? None of these 35.8 3.58 0.358 None of these 35.8 3.58 0.358 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/10 + 5/100 + 8/1000= 0.3 + 0.05 + 0.008 = 0.358
Fractions and Decimals (10.3 * 10.3 * 10.3 + 1)/(10.3 * 10.3 - 10.3 + 1) is : None of these 1.3 11.3 111.3 None of these 1.3 11.3 111.3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a^3 + b^3 = (a+ b) * (a^2 + b^2 - ab)..( (10.3)^3 + (1)^3 ) / ((10.3)^2 + (1)^2 - (1 * 10.3))=> a + b = 10.3 + 1 = 11.3
Fractions and Decimals The value of 47 / 10000 is ? 0.47 0.047 0.00047 0.0047 0.47 0.047 0.00047 0.0047 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 47/10000 = .0047
Fractions and Decimals Evaluate : [(2.39)² - (1.61)²] / [2.39 - 1.61] 6 3 4 2 6 3 4 2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Expression=(a² - b²) / (a - b)=[(a + b)(a - b)] / (a - b)= (a + b)= (2.39 + 1.61)= 4
Fractions and Decimals 0.8 x ? =0.0004 0.05 0.005 0.00005 0.0005 0.05 0.005 0.00005 0.0005 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 0.8y = 0.0004Then,y = 0.0004 / 0.8 = 0.004 / 8= .0005
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