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$\dfrac{4.2 \times 4.2 - 1.9 \times 1.9}{2.3 \times 6.1}$ is equal to :

0.5
1.0
20
22
Explanation:

Given Expression =$\dfrac{(a^2 - b^2)}{(a+b)(a-b)}$=$\dfrac{(a^2 - b^2)}{(a^2 - b^2)}$=1

Additional Questions

The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y ?

Answer

Which of the following fractions is greater than $\dfrac{3}{4}$ and less than $\dfrac{5}{6}$ ?

Answer

The value of $\dfrac{489.1375 \times 0.0483 \times 1.956}{0.0873 \times 92.581 \times 99.749}$ is closest to:

Answer

The least among the following is:

Answer

$\dfrac{5\times1.6 - 2 \times 1.4}{1.3}$=?

Answer

How many digits will be there to the right of the decimal point in the product of 95.75 and .02554 ?

Answer

The expression (11.98 $\times$ 11.98 + 11.98 $\times$ x + 0.02 $\times$ 0.02) will be a perfect square for $x$ equal to:

Answer

$\dfrac{(0.1667)(0.8333)(0.3333)}{(0.2222)(0.6667)(0.1250)}$ is approximately equal to:

Answer

3889 + 12.952 - ? = 3854.002

Answer

$\dfrac{4.2 \times 4.2 - 1.9 \times 1.9}{2.3 \times 6.1}$ is equal to :

Answer
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