Methods of Solving Mathematical Operations

$\mathrm{If} 6\frac{1}{\mathrm{x}}\times \frac{4}{5}=5, \mathrm{x}=?$

Which one set of letters when sequentially placed at the gaps will complete the given letter series?

If $\mathrm{A}$ represents '$\times$', $\mathrm{B}$ represents '$÷$', $\mathrm{C}$ represents '$+$' and $\mathrm{D}$ represents '$-$', then find the value of $2 \mathrm{A} 8 \mathrm{D} 5 \mathrm{C} 9 \mathrm{B} 3$?

If the given interchanges are made in signs and numbers, which one of the four equations would be correct

Given interchanges signs $+$ and$\times$  numbers $3$ and $7$.

Some questions are solved on the basis of a certain system on the same basis find out the correct answer from amongst the four alternatives for the unsolved equations in each question.

if

$$\begin{gathered} 0 1 2 4=9 \\ 1 2 3 4=15 \\ 2 3 4 5=25 \end{gathered}$$

then $3 4 5 6=?$

The position of the first and last digits are interchanged and two is subtracted from the middle digit of each the following numbers. If the numbers are arranged in descending order then which of the following would be the last but one number ?

$326 247 379 763 476$

Which of the following interchange of signs would make the given equation correct?

$(12 ÷ 6) + 3 \times 7 = 42$

If a means 'plus' b means 'minus', c means 'multiplied by' and d means 'divided by', than $18 \mathrm{c} 14 \mathrm{a} 6 \mathrm{b} 16 \mathrm{d} 4 = ?$

Which of the following interchange of signs would make the given equation correct?

$5 + 3 \times 8 - 12 ÷ 4 = 3$

Select the correct combination of mathematical signs to replace $*$ signs and the given equation will be balance ?

$40 * 17 * 36 * 49 * 7 * 3$

In given equation which of the following interchange of signs would make the given equation correct ?

$(4 \times 10) ÷ 20 - 5 + 33 = 69$

In given equation which of the following interchange of signs would make the given equation correct?

$9 + 5 ÷ 4 \times 3 - 6 = 12$

If $\mathrm{P}$ means '$+$', $\mathrm{Q}$ means '$\times$', $\mathrm{R}$ means '$÷$' and $\mathrm{S}$ means '$-$', then $44\mathrm{Q}9\mathrm{R}12\mathrm{S}6\mathrm{Q}4\mathrm{P}16=$ ?

Find out the correct answer for the unsolved equation on the basis of the given equation. If $25 \times 21 \times 32 = 210, 33 \times 32 \times 26 = 480$, then find the value of the given equation --

 $26 \times 34 \times 41 = ?$

Find the missing number from the given responses:

If the given interchanges are made in signs and numbers, which one of the four equations would be correct

Given interchanges: signs `$+$ and $-$ numbers $5$ and $8$ .

Which interchange of signs will correct the following equation ?

$25 + 2 – 4\times 8 = 55$

If $\text{'}*\text{'}$ stands for division, $\text{'}-\text{'}$ stands for multiplication, $\text{'}/\text{'}$ stands for addition and $\text{'}@\text{'}$ st$$ands for subtraction. Choose the correct equation from the given responses ?

If $\text{'}-\text{'}$ Stands for addition, $\text{'}÷\text{'}$ Stands for multiplication, $\text{'}\times \text{'}$ Stands for subtraction and $\text{'}+\text{'}$ Stands  for division then which of the following is correct?

If $\mathrm{P}$ means $+$, $\mathrm{Q}$ means $\times$, $\mathrm{R}$ means $÷$ and $\mathrm{S}$ means $-$ then:

$44\mathrm{Q}9\mathrm{R}12\mathrm{S}6\mathrm{Q}4\mathrm{P}16 = ?$

Select the correct combination of mathematical signs to replace$*$  signs to balance the select equation.

$2 * 3 * 2 * 4 * 8$