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What will be the value of
\begin{aligned}
25.732^2 - 15.732^2
\end{aligned}

  • 214.64
  • 314.64
  • 414.64
  • 412.64

Answer: Option C

Explanation:

Can be easily solved with following formula
\begin{aligned}
a^2 - b^2 = (a - b)(a + b)
\end{aligned}

Similar Questions :

1. Value of
\begin{aligned}
0.5\overline{6}
\end{aligned}

  • \begin{aligned} \frac{51}{99} \end{aligned}
  • \begin{aligned} \frac{51}{90} \end{aligned}
  • \begin{aligned} \frac{51}{9} \end{aligned}
  • \begin{aligned} \frac{510}{99} \end{aligned}

Answer: Option B

Explanation:

\begin{aligned}
0.5\overline{6} = \frac {56 - 5}{90} = \frac {51}{90}
\end{aligned}

2. Which is smallest

  • 13/16
  • 15/19
  • 17/21
  • 7/8

Answer: Option B

3. Evaluate 35 / .07

  • 400
  • 500
  • 505
  • None of above

Answer: Option B

Explanation:

35/.07 = 3500/7 = 500

4. Which is in ascending order

  • 1/3, 2/5, 3/5, 6/7
  • 2/5, 1/3, 3/5, 6/7
  • 1/3, 2/5, 6/7, 3/5
  • 3/5, 6/7, 1/3, 2/5

Answer: Option A

5. What will be the value of
\begin{aligned}
25.732^2 - 15.732^2
\end{aligned}

  • 214.64
  • 314.64
  • 414.64
  • 412.64

Answer: Option C

Explanation:

Can be easily solved with following formula
\begin{aligned}
a^2 - b^2 = (a - b)(a + b)
\end{aligned}

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