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Question (31)

QN0030363

Which feature helps identify a magic grid?

(A) Equal products in every row
(B) Equal sums in every row, column and diagonal
(C) Equal differences in every row
(D) Consecutive integers in every row

Correct Answer: B

Explanation:

A magic grid has equal sums in every row, column and diagonal.

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Question (32)

QN0030364

A row of a magic grid contains –15, 8 and 10. What is the magic sum?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: B

Explanation:

–15 + 8 + 10 = 3.

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Question (33)

QN0030365

In a magic grid, the magic sum is –6. Two numbers in a diagonal are –10 and 1. The third number is

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: B

Explanation:

–10 + 1 = –9. Therefore, the missing number is 3.

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Question (34)

QN0030366

Which statement about integers in a magic grid is correct?

(A) Only even integers can be used.
(B) Only odd integers can be used.
(C) Positive, negative and zero may all appear.
(D) Zero cannot appear in a magic grid.

Correct Answer: C

Explanation:

A magic grid of integers may contain positive integers, negative integers and zero.

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Question (35)

QN0030367

In a magic grid, the magic sum is 4. Two numbers in a row are 11 and –9. The third number is

(A) 1
(B) 2
(C) 3
(D) 4

Correct Answer: B

Explanation:

11 + (–9) = 2. Therefore, the missing number is 2.

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Question (36)

QN0030368

A column of a magic grid contains 7, –13 and 9. What is the magic sum?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: B

Explanation:

7 + (–13) + 9 = 3.

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Question (37)

QN0030369

In a magic grid, if every row has the same sum but one diagonal has a different sum, then the grid is

(A) A magic grid
(B) Not a magic grid
(C) A square grid only
(D) An integer table only

Correct Answer: B

Explanation:

A magic grid must have equal sums in every row, column and both diagonals.

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Question (38)

QN0030370

In a magic grid, the magic sum is –9. Two numbers in a column are –12 and 5. The missing number is

(A) –1
(B) –2
(C) –3
(D) –4

Correct Answer: B

Explanation:

–12 + 5 = –7. Therefore, the missing number is –2.

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Question (39)

QN0030371

A diagonal of a magic grid contains 16, –7 and –3. What is the magic sum?

(A) 5
(B) 6
(C) 7
(D) 8

Correct Answer: B

Explanation:

16 + (–7) + (–3) = 6.

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Question (40)

QN0030372

In a magic grid, the magic sum is 13. Two numbers in a row are –6 and 15. The third number is

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: C

Explanation:

–6 + 15 = 9. Therefore, the missing number is 4.

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Question (31)

Which feature helps identify a magic grid?

Explanation:

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Question (32)

A row of a magic grid contains –15, 8 and 10. What is the magic sum?

Explanation:

Link:

Question (33)

In a magic grid, the magic sum is –6. Two numbers in a diagonal are –10 and 1. The third number is

Explanation:

Link:

Question (34)

Which statement about integers in a magic grid is correct?

Explanation:

Link:

Question (35)

In a magic grid, the magic sum is 4. Two numbers in a row are 11 and –9. The third number is

Explanation:

Link:

Question (36)

A column of a magic grid contains 7, –13 and 9. What is the magic sum?

Explanation:

Link:

Question (37)

In a magic grid, if every row has the same sum but one diagonal has a different sum, then the grid is

Explanation:

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Question (38)

In a magic grid, the magic sum is –9. Two numbers in a column are –12 and 5. The missing number is

Explanation:

Link:

Question (39)

A diagonal of a magic grid contains 16, –7 and –3. What is the magic sum?

Explanation:

Link:

Question (40)

In a magic grid, the magic sum is 13. Two numbers in a row are –6 and 15. The third number is

Explanation:

Link:

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