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Mathematical Operations And Symbol Notations

Multiple Choice Questions

If 64 + 7 = 460, and 25 + 8 = 212 then, 43 + 8 = ?

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If '+' means 'x' , '−' means '÷' 'x' means '−' and '÷' means '+', then find the value of the following equation.
6 + 64 − 8 ÷ 45 x 8

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After interchanging + and −, 8 and 7, which one of the following becomes correct?

8 − 7 + 3 x 5 = 35
8 x 2 + 7 − 6 = 9
7 x 8 + 6 − 9 = 25
7 x 8 + 6 − 9 = 25

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If + means −, − means X, X means $divided by$ and $divided by$ means +. Which combination will give you the value of 0 in
42 * 4 * 12 * 20 * 9 ?

$straight X minus divided by plus$
$negative divided by cross times plus$
$divided by plus negative cross times$
$divided by plus negative cross times$

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5. Which of the following interchange of signs would make the equation correct?
49 - 7 + 7 = 14

+ and -
- and ÷
- and +
- and +

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6. if '>' stands for division, 'v' stands for multiplication, '−' stands for greater than, 'x' stands for less than, '<' stands for addition, '^' stands for subtraction, '+' stands for equal to, then which of the following equations is correct?

5 V 4 < 2 + 10 V 2 < 2
8 V 6 - 3 + 4 > 7 ^ 6
8 V 4 - 2 + 5 > 7 ^ 6
8 V 4 - 2 + 5 > 7 ^ 6

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7. Some equations are solved on the basis of a certain system. Find the correct answer for the unsolved equation on that basis.
2 * 3 = 17; 3 * 4 = 145; 5 * 2 = ?

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Select the correct combination of mathematical signs to replace * signs and to balance the following equation.
(8 * 5 * 6) * 10 * 24

$cross times cross times divided by equals$
$plus negative equals cross times$
$cross times negative divided by equals$
$cross times negative divided by equals$

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9.
In the following problem, '=' stands for '÷' , '+' stands for '-' , 'x' stands for '=', '-' stands for '+' and '÷' stands for 'x'. Find the correct equation.

8 ÷ 4 + 1 - 5 = 6 x 4

4 x 6 ÷ 4 + 4 = 7

5 ÷ 3 - 25 + 20 = 20 x 39

5 ÷ 3 - 25 + 20 = 20 x 39

5 ÷ 3 - 25 + 20 = 20 x 39

5 ÷ 3 - 25 + 20 = 20 x 39
On changing sign according to the question,
5 x 3 + 25 - 20 ÷ 20 = 39
15 + 25 -1 = 39
39 = 39

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10.

If '+' stands for '÷', '-' stands for '=', 'x' stands for '+', '÷'stands for greater than, '=' stands for less than, '>' stands for multiplication and '<' stands for subtraction, then which of the following alternatives is correct?