Free Practice Questions for Mathematical-operation in Reasoning

$18 \div 6-27+3 \times 12$

After interchanging the signs, according to the question,

$18 \times 6+27 \div 3-12$

 $=108+9-12$

$=117-12$

$=105$

Hence, option (2) is the correct answer.

विकल्प (2) से,

$18 \div 6-27+3 \times 12$
प्रश्न के अनुसार चिन्हों को आपस में बदलने के बाद,

$18 \times 6+27 \div 3-12$

$=108+9-12$

$=117-12$

$=105$

अतः विकल्प (2) सही उत्तर है।

from option (4),
$
14+4 \div 5-18 \times 2=25
$
After interchanging the signs according to the question
$
\begin{aligned}
& 14+4 \times 5-18 \div 2=25 \\
& 14+20-9=25 \\
& 34-9=25 \\
& 25=25 \\
& L H S=R H S
\end{aligned}
$
Hence, option (4) is the correct answer.

विकल्प (4) से,

$
14+4 \div 5-18 \times 2=25
$
प्रश्न के अनुसार चिन्हों को आपस में बदलने के बाद
$ 14+4 \times 5-18 \div 2=25$
$14+20-9=25$
$ 34-9=25$
$ 25=25$
बायां पक्ष = दायां पक्ष
अतः विकल्प (4) सही उत्तर है।

from option (2),

$
3 \times 2 \div 2+2-3=3
$
After interchanging the signs and numbers according to the question
$
\begin{aligned}
& 2 \div 3 \times 3+3-2=3 \\
& 2+3-2=3 \\
& 5-2=3 \\
& 3=3 \\
& L H S=R H S
\end{aligned}
$
Hence, option (2) is the correct answer.

from option (3),

$
8+12 \div 9 \times 6-4=12 \div 6 \times 8+9-1
$
After interchanging the numbers according to the question
$
\begin{aligned}
& 8+6 \div 9 \times 12-4=6 \div 12 \times 8+9-1 \\
& 8+8-4=4+9-1 \\
& 16-4=13-1 \\
& 12=12 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (3) is the correct answer.

from option (3),

$
18-8 \div 12 \times 6+10=12
$
after interchanging the signs and numbers according to the question
$
\begin{aligned}
& 18+6 \div 12 \times 8-10=12 \\
& 18+4-10=12 \\
& 22-10=12 \\
& 12=12 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (3) is the correct answer.

from option (4),

$
\begin{aligned}
& 9+12 \div 6 \times 8-4=14 \\
& \text { after interchanging the signs according to the question } \\
& 9+12 \times 6 \div 8-4=14 \\
& 9+12 \times 0.75-4=14 \\
& 9+9-4=14 \\
& 18-4=14 \\
& 14=14 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (4) is the correct answer.

from option (3),

$
10-15 \times 9+6 \div 3=9
$
after interchanging the signs according to the question
$
\begin{aligned}
& 10 \div 15 \times 9+6-3=9 \\
& 6+6-3=9 \\
& 12-3=9 \\
& 9=9 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (3) is the correct answer.

from option (1),

$
12 \times 18 \div 3-6+4=5
$
after interchanging the signs and numbers according to the question
$
\begin{aligned}
& 12 \div 18 \times 6-3+4=5 \\
& 4-3+4=5 \\
& 5=5 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (1) is the answer.

from option (3),

$
4 \times 2-8+9 \div 3=9 \div 3+4 \times 2-8
$
after interchanging the numbers according to the question
$
\begin{aligned}
& 4 \times 2-3+9 \div 8=9 \div 8+4 \times 2-3 \\
& 4 \times 2-3+1.125=1.125+8-3 \\
& 8+1.125-3=9.125-3 \\
& 6.125=6.125 \\
& L H S=R H S
\end{aligned}
$
Hence, option (3) is the correct answer.

Given
$18+12 \times 8-6 \div 3=9
$
After interchanging the signs according to option (4)
$
\begin{aligned}
& 18 \div 12 \times 8-6+3=9 \\
& 12-6+3=9 \\
& 15-6=9 \\
& 9=9 \\
& L H S=\text { RHS }
\end{aligned}
$
Hence, option (4) is the correct answer.

$
12 \div 4+2-6 \times 3=3 \div 12+6 \times 2-4
$

From option (2),after interchanging the signs and numbers,
$
\begin{aligned}
& 12+6 \div 2-4 \times 3=3+12 \div 4 \times 2-6 \\
& 12+3-12=3+6-6 \\
& 15-12=9-6 \\
& 3=3 \\
& \text { LHS=RHS }
\end{aligned}
$
Hence, option (2) is the correct answer.

$
9+4 \div 2-6 \times 3=4 \div 3 \times 6-9+1
$
From option (4), after interchanging the numbers,
$
\begin{aligned}
& 9+6 \div 2-4 \times 3=6 \div 3 \times 4-9+1 \\
& 9+3-12=8-9+1 \\
& 12-12=9-9 \\
& 0=0 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (4) is the correct answer.

From option (3),

$6 \times 3-8 \div 2+5=8 \div 2+3 \times 5-6$
After interchanging the numbers according to question
$
\begin{aligned}
& 5 \times 3-8 \div 2+6=8 \div 2+3 \times 6-5 \\
& 15-4+6=4+18-5 \\
& 21-4=22-5 \\
& 17=17 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (3) is the correct answer.

From option (3),

$
8 \div 2-6 \times 4+3=13
$
after interchanging the signs and numbers according to the Question
$
\begin{aligned}
& 6 \times 2-8 \div 4+3=13 \\
& 12-2+3=13 \\
& 15-2=13 \\
& 13=13 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (3) is the correct answer.

From option (2),

$
4+8 \times 12 \div 6-4=8
$
After interchanging the sign according to the question
$
\begin{aligned}
& 4 \div 8 \times 12+6-4=8 \\
& 0.5 \times 12+6-4=8 \\
& 6+6-4=8 \\
& 12-4=8 \\
& 8=8 \\
& \text { LHS }=\text { RHS }
\end{aligned}
$
Hence, option (2) is the correct answer.

Has given-
$
625 \times 5+93-22 \div 8=42
$
On interchanging the signs $\times$ and $\div$ in the above expression
$
\begin{aligned}
&625 \div 5+93-22 \times 8 \\
&=125+93-176 \\
&=218-176 \\
&=42
\end{aligned}
$
Hence, option (2) is the correct answer

 given,
$a \quad \Rightarrow \quad$ $\times$
$b\quad \Rightarrow \quad$ $\div$
$c\quad \Rightarrow \quad$ -
$d \quad \Rightarrow \quad$ +
Substituting the values of a, b, c, and d in the expression 55 a 5b5 c 5d 3
$55 \times 5 \div 5-5+3$
$
\begin{aligned}
&55 \times 1-5+3 \\
&55+3-5 \\
&58-5=53
\end{aligned}
$
Hence, option (1) is the correct answer.

Has given-

$42 \div 23+870 \times 3-5=541$

On interchanging the signs $\div$ and $-$ in the above equation 

$
\begin{aligned}
&42-23+870 \times 3 \div 5 \\
&=42 - 23+522 \\
&=541
\end{aligned}
$

Hence, option (2) is the correct answer.

$\mathrm{P}=$ subtraction $(-)$

$\mathrm{Q}=$ division $(\div)$

$\mathrm{R}=$ addition $(+)$

$\mathrm{S}=$ multiplication $(\times)$

106 R 115 Q 23 S 7 P 19
converting to symbols

$106+115 \div 23 \times 7-19$
$=106+5 \times 7-19$
$=106+35-19$
$=141-19=122$
Hence, option (2) is the correct answer.

Given,

426 ÷648-312

If signs ' ÷ ' and '-' are interchanged and the digits ' 2 ' and ' 4 ' are interchanged then 

246-628÷314

= 246- 2

=244

Hence, option (4) is the correct answer.