Basics of Mathematical Operations

Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.

$45*24*72*20*12*7$

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

$14 * 7 * 39 * 133 * 19 * 130$

Select the correct combination of mathematical signs that can sequentially replace the * signs and make the equation correct.

$48*12*8*15*3*44$

Select the correct sequence of mathematical signs that can sequentially replace the * signs and balance the given equation.

$6*10*55*162*9=23$

Which two numbers should be interchanged to make the given equation correct?

$36\times 81÷9-(88÷4)+14+(22+7)=169$

Select the correct combination of mathematical signs that can sequentially replace the $*$ signs and make the equation correct.

$68 * 138 * 23 * 54 * 20$

The following equation becomes mathematically correct when you interchange either the sign or the numbers as indicated in the question.Find the correct alternative.

Given equation

( 16 - 4 ) x 6 ÷ 2 + 8 = 30

If mathematical operators $‘-‘$and $‘÷’$ are interchanged, the value of $15\times 4+15-11\times 33÷98$is:

If 4 * 2 @ 3 = 6 and 18 * 6 @ 4 = 12, then what will be the value of 24 * 3 @ 7?

If '+' stands for ‘×’, ‘–’ stands for '+' and ‘÷’ stands for ‘–’ which of the following is false?

In a certain code language, 'x' represents '+', ' \( \div \) ' represents 'x', '-' represents '\( \div \) ' and '+' represents '-'. Find out the answer to the following question.
13 + 8 x 2 \( \div \) 25 - 10 = ?

If a means +, b means ×, c means \( \div \) , d means –, then 20a10b45c5d12 = ?

In a certain code language, '$+$' represents '$\times$', '$-$' represents '$+$', '$\times$' represents '$÷$' and '$÷$' represents '$-$'. Find out the answer to the following question.
$0.025 + 200 - 345 \times 15 = ?$

If '$-$' stands for '$+$', '$+$' stands for '$\times$', '$\times$' stands for '$-$' then which one of the following is not correct?

$÷$means >
> means $\times$
 $\times$ means +
 + means $÷$
< means –
– means =
 = means <

In each of the following question ,Insert proper mathematical signs between the figures in the sum.

If $\times$ means ‘Minus’; $÷$ means ‘Plus’ and + means ‘Divided by’, then

$16÷8 \times 4–8+ 4=?$

In each of the following question ,Insert proper mathematical signs between the figures in the sum.

If X stands for +, Y stands for –, Z stands for $\times$, what is the value of

$(5 Z 4) X (2 Z 2) Y 3?$

In each of the following question ,Insert proper mathematical signs between the figures in the sum.

If + means –; – means $\times$; $\times$ means $÷$; and $÷$ means +, then 
$26 – 18 x 9 ÷3 +11$
When solved will be equal to:

In each of the following question ,Insert proper mathematical signs between the figures in the sum.

$7—3—5—5=5$

In each of the following question ,Insert proper mathematical signs between the figures in the sum.

$8—2—5—5=15$