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$A: B = 2 : 3$ $B : C = 4 : 5 = 4 * \frac{3}{4} : 5 * \frac{3}{4} =  3 : \frac{15}{4} $  ...

Multiply last digits of each number. 4*8*7*3 32*21 2*1 Hence unit digit is 2

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The sum of a number and its additive inverse is always 0. Hence (D) is the answer.

If you are referring to the sum of a number and its additive inverse, then it is always 0. If you a...

https://clay6.com/qa/39884/in-how-many-ways-can-the-letters-of-the-word-assassination-be-arranged-so...

Any two digit number can be written as $10n + m$ where $n$ and $m$ are the ten's and unit digit resp...

No. For example,   $2 - 3 \neq 3  - 2 $

From first parabola $y^2=16x$, differentiating we get $y' = \frac{2}{\sqrt{x}}$   From se...

Using sin(A+B) = sinAcosB + cosAsinB and cos(A+B) = cosAcosB - sinAsinB $sinx - 3. 2sinx.cosx + sin...

(i) When the two classes meet at the same hour, there are 40 students in chem and 60 in physics. So ...

https://clay6.com/qa/44476/write-the-set-a-in-set-builder-form-

Let son's age be $x$ Then father's age = $3x$ After 8 years, $3x + 8 = \frac{5}{2} (x+8)$  &...

  Area $A = \frac{1}{2}{b*h}$  where $b$ is the base and $h$ is the height of the p...

We have to find closest square greater than 1035.   32 * 32 = 1024 33 * 33 = 1089 So x is 1...

100 rows with 60 chairs in each row ???!!!  If this is to be arranged like a square ( equal row...

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Ascending evolutionary cycle - Chlorophyte ancestors, rhynia type plsbts, seed ferns, cycad...

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The hint here is to use the fact that $2.2^2 = 4.84$ So  $\sqrt{0.048} \approx \sqrt{0.0484} =...

Weight is a force. On earth, it is the force with which a body is attracted towards earth. So in a s...

Assuming 1m in length wall, and only brick width, we will need $\frac{1 \;m}{20 \; cm} = \frac{100}...

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  $y=ae^{2x}+be^{3x}$ -- ( 1 )   Differentiating, $y' = 2ae^{2x} + 3be^{3x}$ -- ...

  Let X be the meeting point.  Both balls would have travelled same time to get to m...

    $y = ae^{2x} + be^{-3x} + ce^{x} $  -- ( 1 )   Differentiating,&nb...

We are working on a new feature where you can take a pic with the camera phone or upload pics as a q...

Inverse functions are symmetrical with respect to the line $y = x$.  Since  $y=10^x $ and ...

( 3C1  + 3C2 + 3C3 ) * 4! * 5! = ( 3 + 3 + 1) * 24 * 120 = 7 * 24 * 120

Let $x$ be the number. $ \frac{6}{7} * x = 36 $ Multiply both sides by $\frac{7}{6} $, we get $ \...

Sum of interior angles of pentagon is 540 x + 2x + 3x + 4x + 140 = 540 10x = 540 - 140 = 400 x =...

colinear     .................

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Equation of a sphere is $x^2+y^2+z^2=r^2$ where $(x,y,z)$ is any point on the sphere and $r$ is the ...

This question is not clear. A great circle is the intersection of the sphere and a plane that passes...

A great circle is the intersection of the sphere and a plane that passes through the center point of...

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https://clay6.com/qa/67128/balvinder-is-reading-a-mystery-novel-and-this-book-has-460-pages-balvinde...

Pages read every day = $460 * \frac{9}46} = 90 $ pages Pages read in 4 days = $4*90 = 360$ pages P...

$a^2 - b^2 = (a-b)(a+b)$ $249^2 - 248^2 = (249-248)(249+248) = 1*497=497$

https://clay6.com/qa/82948/if-cos-thwta-alpha-p-and-sin-theta-beta-q-prove-p2-q2-2pqsin-alpha-beta-#...

https://clay6.com/qa/82948/if-cos-thwta-alpha-p-and-sin-theta-beta-q-prove-p2-q2-2pqsin-alpha-beta-#...

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$\frac{2}{5} + \frac{3}{7} = \frac{29}{35}$ ( mutually exclusive events )

  Second Derivative Test - If f'(x) = 0 at a point and f''(x) > 0 at this point, then f(...

\( sin^{-1}x=tan^{-1}\large\frac{x}{\sqrt{1-x^2}}\)  -- ( 1 ) \( tan^{-1}x=2tan^{-1}\large\...