Mathematical operation and symbol notation
Direction: In the following questions, which one of the four interchanges in signs and numbers would make the given equation correct?
 4 x 6  2 = 14

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Interchange '' to '+' and 2 to 6 and try
Correct Option: B
On interchanging '' to '+' and 2 to 6
4 x 2 + 6 = 14
⇒ 8 + 6 = 14
⇒ 14 = 14
 (6 ÷ 2) x 3 = 0

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On interchanging signs 'x' to '' and 2 to 3
(6 ÷ 3)  2 = 0
⇒ 2  2 = 0
⇒ 0 = 0Correct Option: C
On interchanging signs 'x' to '' and 2 to 3
(6 ÷ 3)  2 = 0
⇒ 2  2 = 0
⇒ 0 = 0
 (3 ÷ 4) + 2 = 2

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On interchanging signs '+' to '÷' and 2 to 3
(2 + 4) ÷ 3 = 2
⇒ 6 ÷ 3 = 2 ⇒ 2 = 2Correct Option: C
On interchanging signs '+' to '÷' and 2 to 3
(2 + 4) ÷ 3 = 2
⇒ 6 ÷ 3 = 2 ⇒ 2 = 2
Direction: Study the following information carefully and answer the given questions. If '+' is coded as 'π' , 'x' is coded as '≠' , '÷' is coded as '$' and '' is coded as Δ, then what is the value of the following ?
 2 ≠ 7 Δ 4

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Given, 2 ≠ 7 Δ 4
After interchanging the signs,
2 x 7  4
Apply the BODMAS RuleCorrect Option: D
Given, 2 ≠ 7 Δ 4
After interchanging the signs,
2 x 7  4
Apply the BODMAS Rule
2 x 7  4 = 14  4 = 10.
Direction: Correct the following equations by interchanging the two signs.
 3^{2} x 2 ^{2} ÷ (6^{2}  9) + 1^{2} = 33

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Lets try all options one by one.
Correct Option: A
If we interchange symbols '' and '÷', the equation becomes
9 x 4  (36 ÷ 9) + 1
= 9 x 4  36/9 + 1
= 36  4 + 1
= 33