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 Mathematical Operations Questions

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Q:

The value of -4-(-10) is how much greater then the value of -10-(-4) ?

A) 10 B) 6
C) 12 D) 0
 
Answer & Explanation Answer: C) 12

Explanation:

-4-(-10) = -4+10 = 6

 

-10-(-4) = -10+4= -6

 

Therefore, 6-(-6) = 6+6 = 12

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Q:

If 324⊕289 = 35, 441⊕484 = 43, then 625⊕400 = ?

A) 431 B) 413
C) 341 D) 143
 
Answer & Explanation Answer: D) 143

Explanation:
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Q:

If "–" stands for "÷", "+"stands for "x", "÷" for "–" and "x" for "+", which of the following equations is correct?

A) 40 – 10 + 5 ÷ 4 x 5 = 21 B) 40 + 10 – 4 x 5 ÷ 3 = 80
C) 40 ÷ 10 – 4 x 5 + 3 = 32 D) 8 – 4 x 40 ÷ 2 + 15 = 30
 
Answer & Explanation Answer: A) 40 – 10 + 5 ÷ 4 x 5 = 21

Explanation:
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Q:

If "A" denotes "subtracted from", "B" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by", then which of the following statement is correct?

A) 3 A 12 B 16 D 17 C 1 = 163 B) 5 C 7 A 9 D 8 B 2 = 294
C) 13 C 13 A 13 B 13 D 13 = 157 D) 18 C 16 D 49 A 27 B 9 = 200
 
Answer & Explanation Answer: C) 13 C 13 A 13 B 13 D 13 = 157

Explanation:
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Q:

What is 7 + 7 ÷ 7 + 7 × 7 - 7 =

A) 0 B) 42
C) 50 D) 57
 
Answer & Explanation Answer: C) 50

Explanation:

Given 7 + 7/7 + 7 x 7 - 7

By using BODMAS rule,

7 + 1 + 7 x 7 - 7

= 8 + 49 - 7

= 57 - 7

= 50.

 

Hence 7 + 7/7 + 7 x 7 - 7 = 50.

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Q:

In the following question, correct the given equation by interchanging two numbers.
8 x 3 ÷ 4 + 9 – 5 = 16

A) 3 and 4 B) 4 and 8
C) 5 and 3 D) 5 and 9
 
Answer & Explanation Answer: C) 5 and 3

Explanation:
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Q:

Which of the following interchanges in signs and numbers will make the given equation correct?
8 x 9 + 2 = 74

A) x and =, 2 and 9 B) x and +, 8 and 2
C) + and x, 8 and 9 D) + and =, 74 and 2
 
Answer & Explanation Answer: B) x and +, 8 and 2

Explanation:
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Q:

What is x squared plus x squared?

A) 4x B) 2x^2
C) x^4 D) 2x
 
Answer & Explanation Answer: B) 2x^2

Explanation:

In an algebraic expression, like terms are terms that contain the same variables raised to the same powers. Calculating x-squared plus x-squared is a matter of combining like terms. 

Now x^2 + x^2 = 2x^2

 

Hence, x-squared plus x-squared is equal to 2 times x squared.

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