Mathematical Operations Questions

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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24 3123
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:

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:

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

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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

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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

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Q:

X2+X2 =

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

Explanation:

Here the given expression, 

X2 + X is an algebraic expression. Here in this expression the terms are like terms. Now to add them, add their coefficients.

Here in the given expression, the like terms are two X

Hence, adding their coefficients i.e, 1 + 1 = 2

Therefore, 

 

X2 + X2 = 2X2.

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Q:

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?

A) 46 B) -46
C) 47 D) -45
 
Answer & Explanation Answer: B) -46

Explanation:
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