Question Detail

7500 + (1250 / 50)

7500
7525
7550
8000

Answer: Option B

Explanation:

As per BODMAS rule first we will solve the terms in the bracket then other.
= 7500 + (25) = 7525

1. How many pieces of 0.85 meteres can be cut from a rod 42.5 meteres long

Answer: Option C

Explanation:

We need so simple divide 42.5/0.85,
=(4250/85) = 50

2. 18800 / 470 / 20

Answer: Option B

Explanation:

18800 / 470 / 20 = (18800 / 470) / 20 = 40 / 20 = 2

3. Simplify
$\begin{aligned} 1+\frac{1}{2}+\frac{1}{4}+\frac{1}{7}+\frac{1}{14}+\frac{1}{28} = ? \end{aligned}$

Answer: Option A

Explanation:

By taking LCM we get
= $\begin{aligned} \frac{28+14+7+4+2+1}{28} = \frac{56}{28} = 2\end{aligned}$

4. The number of girls in a class are 7 times the number of boys, which value can never be the of total students

Answer: Option D

Explanation:

Let the boys are X, then girls are 7X, total = X+7X = 8X

So it should be multiple of 8, 30 is not a multiple of 8.

5. Value of
$\begin{aligned} \frac{1}{2+\frac{1}{2+\frac{1}{2-\frac{1}{2}}}} \end{aligned}$

$\begin{aligned} \frac{6}{19} \end{aligned}$
$\begin{aligned} \frac{7}{19} \end{aligned}$
$\begin{aligned} \frac{8}{19} \end{aligned}$
$\begin{aligned} \frac{9}{19} \end{aligned}$

Answer: Option C

Explanation:

$\begin{aligned} = \frac{1}{2+\frac{1}{2+\frac{1}{\frac{3}{2}}}} \end{aligned}$
$\begin{aligned} = \frac{1}{2+\frac{1}{2+\frac{2}{3}}} \end{aligned}$

$\begin{aligned} = \frac{1}{2+\frac{1}{\frac{8}{3}}} \end{aligned}$

$\begin{aligned} = \frac{1}{2+\frac{3}{8}} \end{aligned}$

$\begin{aligned} = \frac{1}{\frac{19}{8}} \end{aligned}$

$\begin{aligned} = \frac{8}{19} \end{aligned}$

Admin 12 years ago

Hello Bharati, It was a typo error, same corrected.
Thanks for your feedback.
bharati 12 years ago

why did you add the 25 to 7500? bcoz there is division sign