Mathematical operation and symbol notation Easy Questions and Answers

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?

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

On interchanging signs 'x' to '-' and 2 to 3
(6 ÷ 3) - 2 = 0
⇒ 2 - 2 = 0
⇒ 0 = 0

Correct Option: C

On interchanging signs 'x' to '-' and 2 to 3
(6 ÷ 3) - 2 = 0
⇒ 2 - 2 = 0
⇒ 0 = 0

On interchanging signs '+' to '÷' and 2 to 3
(2 + 4) ÷ 3 = 2
⇒ 6 ÷ 3 = 2 ⇒ 2 = 2

Correct 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 ?

Given, 2 ≠ 7 Δ 4
After interchanging the signs,
2 x 7 - 4
Apply the BODMAS Rule

Correct 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.

3² x 2 ² ÷ (6² - 9) + 1² = 33

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