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Question (31)

QN0015102

The middle digit of 11111² is:

(A) 3
(B) 4
(C) 5
(D) 6

Correct Answer: C

Explanation:

11111² = 1234554321.

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Question (32)

QN0015103

What is 12321 × 1?

(A) 12312
(B) 12321
(C) 12322
(D) 12231

Correct Answer: B

Explanation:

Any number multiplied by 1 remains unchanged.

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Question (33)

QN0015104

In the pattern 1×8+1=9, 12×8+2=98, 123×8+3=987, the next result is:

(A) 9875
(B) 9876
(C) 9867
(D) 9987

Correct Answer: B

Explanation:

1234×8+4 = 9876.

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Question (34)

QN0015105

What is 111111 × 111111?

(A) 12345654321
(B) 12345554321
(C) 123456654321
(D) 12345454321

Correct Answer: A

Explanation:

111111² = 12345654321.

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Question (35)

QN0015106

Which idea best explains patterns in products?

(A) Random multiplication results
(B) Repeated calculations reveal number relationships
(C) Multiplication has no structure
(D) Patterns occur only with even numbers

Correct Answer: B

Explanation:

Patterns reveal relationships among numbers.

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Question (36)

QN0015107

A student notices that multiplying numbers made entirely of 1s often gives symmetric results. This observation is an example of:

(A) Guessing without evidence
(B) Studying patterns in products
(C) Division algorithm
(D) Data collection

Correct Answer: B

Explanation:

The student is identifying multiplication patterns.

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Question (37)

QN0015108

What is 1111111 × 1111111?

(A) 1234567654321
(B) 12345677654321
(C) 123456787654321
(D) 12345567654321

Correct Answer: A

Explanation:

1111111² = 1234567654321.

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Question (38)

QN0015109

Which product equals 444444444?

(A) 12345679 × 27
(B) 12345679 × 36
(C) 12345679 × 45
(D) 12345679 × 54

Correct Answer: B

Explanation:

36 = 4 × 9.

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Question (39)

QN0015110

What is 12345679 × 63?

(A) 666666666
(B) 777777777
(C) 888888888
(D) 999999999

Correct Answer: B

Explanation:

63 = 7 × 9.

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Question (40)

QN0015111

Recognizing patterns in products helps mainly in:

(A) Understanding relationships between numbers
(B) Avoiding multiplication
(C) Replacing arithmetic rules
(D) Making numbers smaller

Correct Answer: A

Explanation:

Patterns improve number sense and mathematical understanding.

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Question (31)

The middle digit of 11111² is:

Explanation:

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Question (32)

What is 12321 × 1?

Explanation:

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Question (33)

In the pattern 1×8+1=9, 12×8+2=98, 123×8+3=987, the next result is:

Explanation:

Link:

Question (34)

What is 111111 × 111111?

Explanation:

Link:

Question (35)

Which idea best explains patterns in products?

Explanation:

Link:

Question (36)

A student notices that multiplying numbers made entirely of 1s often gives symmetric results. This observation is an example of:

Explanation:

Link:

Question (37)

What is 1111111 × 1111111?

Explanation:

Link:

Question (38)

Which product equals 444444444?

Explanation:

Link:

Question (39)

What is 12345679 × 63?

Explanation:

Link:

Question (40)

Recognizing patterns in products helps mainly in:

Explanation:

Link:

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