We have to find X such that 4/5 < X < 6/7Converting each fraction into decimal form, we get:4/5 = 0.86/7 = 0.85We have to find the fraction which is greater than 0.8 and less than 0.85.Now,2/3 = 0.663/4 = 0.755/6 = 0.8310/11 = 0.91Clearly, 0.83 lies between 0.8 and 0.85.Required fraction is 5/6
Given expression is, 0.004 x 0.04 x 0.4 x 0.0004The multiplication value without decimal point = 4 x 4 x 4 x 4 = 256Sum of the number of decimal places in the given numbers = 3 + 2 + 1 + 4 = 10Now, in the product, the decimal point is marked off to obtain as many places of decimal.Then the answer is 0.0000000256.