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What decimal of an hour is a second

  • .0028
  • .0027
  • .0026
  • .0025

Answer: Option B

Explanation:

1/(60*60) = 1/3600 = .0027

Similar Questions :

1. What decimal of an hour is a second

  • .0028
  • .0027
  • .0026
  • .0025

Answer: Option B

Explanation:

1/(60*60) = 1/3600 = .0027

2. Which is smallest

  • 13/16
  • 15/19
  • 17/21
  • 7/8

Answer: Option B

3. Arrange the fractions in ascending order

  • 5/8 < 7/12 < 3/4< 13/16
  • 5/8 < 7/12 < 13/16 < 3/4
  • 5/8 < 3/4< 13/16 < 7/12
  • 7/12 < 5/8 < 3/4< 13/16

Answer: Option D

Explanation:

5/8 = .625, 7/12 = .5833, 3/4 = .75, 13/16 = .8125

So order will be
7/12 < 5/8 < 3/4< 13/16

4. Evaluate
\begin{aligned}
\frac{2.39^2 - 1.61^2}{2.39 - 1.61}
\end{aligned}

  • 2
  • 3
  • 4
  • 5

Answer: Option C

Explanation:

Use following formula to solve it quickly
\begin{aligned}
\frac{a^2-b^2}{a-b}=\frac{(a+b)(a-b)}{(a-b)} = (a+b)
\end{aligned}
= (2.39+1.61) = 4

5. If 144/0.144 = 14.4/x, then x = ?

  • 0.144
  • 0.0144
  • .00144
  • 1.44

Answer: Option B

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