Methods of Solving Mathematical Operations

If the ratio of sum and difference of two numbers is $7 : 1$, then the ratio of these two numbers is

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 $2 \mathrm{A} 8 \mathrm{D} 5 \mathrm{C} 9 \mathrm{B} 3$?

One nautical mile is equal to-

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

Find the missing number 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.

$2 * 3 * 2 * 4 * 8$

Which of the following set of symbols will replace matrix mark in the expression given below?

$6 \times 3 \times 4 \times 45$

In a group of equal number of cows and herdsmen the number of legs was 28 less than four times the number of heads. The number of herdsman was

$\underset{x\to \infty }{\lim }\frac{1^2+2^2+3^2+.....+x^2}{x^3}=$

_____________ function divides one numeric expression by another and returns the remainder.

If sign$\text{'}-\text{'} means \text{'}+\text{'} sign \text{'}+\text{'} means \text{'}-\text{'}, sign\text{'}\times \text{'} means \text{'}÷\text{'} and sign \text{'}÷\text{'} means \text{'}\times \text{'}$Then simplify-

$7 - 8 \times 5 ÷ 6 + 4$

If  '$-$' stands for '$+$', '$+$' stands for '$\times$', '$\times$' stands for '$-$'. Choose the wrong equation from the given responses ?

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

If $2 \& 6 \% 7 = 33, 4 \& 6 \% 8 = 54$, then what will be the value of $6 \% 8 \& 9$?

If K means $÷$, I means $\times$, S means $+$ and H means $-$, then what is the value of '$2513$ S $22$ K $11$ H $6$ S $10$'?

If P is 25% less than Q and R is 20% higher than Q the Ratio of R and P

If '$+$' means '$\times$', '$–$' means '$+$', '$\times$' means '$÷$', '$÷$' means '$–$'. Then find the value for the given equation, $10 + 5\times 10 ÷ 2 – 5 = ?$

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

$64 ÷ 8 - 9 \times 8 = 64$

$15,16,20,29,45,?$