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Question (31)

QN0020322

A number ending in 0 is always divisible by:

(A) 2 and 10
(B) 3 and 9
(C) 4 and 8
(D) 7 and 11

Correct Answer: A

Explanation:

Any number ending in 0 is divisible by 2 and 10.

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Question (32)

QN0020323

Which number is divisible by 5 but not by 2?

(A) 450
(B) 725
(C) 680
(D) 920

Correct Answer: B

Explanation:

725 ends in 5 and is odd.

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Question (33)

QN0020324

The sum of digits of 999 is:

(A) 18
(B) 21
(C) 24
(D) 27

Correct Answer: D

Explanation:

9+9+9=27.

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Question (34)

QN0020325

Therefore, 999 is divisible by:

(A) 2 only
(B) 5 only
(C) 3 and 9
(D) 10 only

Correct Answer: C

Explanation:

27 is divisible by both 3 and 9.

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Question (35)

QN0020326

Which number is divisible by 4 but not by 8?

(A) 216
(B) 324
(C) 512
(D) 648

Correct Answer: B

Explanation:

24 is divisible by 4 but 324 is not divisible by 8.

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Question (36)

QN0020327

The last three digits of 5324 are:

(A) 324
(B) 532
(C) 234
(D) 524

Correct Answer: A

Explanation:

The last three digits are 324.

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Question (37)

QN0020328

Which divisibility rule depends on the sum of digits?

(A) Rule for 2
(B) Rule for 4
(C) Rule for 3
(D) Rule for 10

Correct Answer: C

Explanation:

Divisibility by 3 uses the digit sum.

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Question (38)

QN0020329

Divisibility tricks are mainly used to:

(A) Estimate measurements
(B) Test divisibility quickly
(C) Draw graphs
(D) Compare fractions only

Correct Answer: B

Explanation:

They provide quick checks for divisibility.

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Question (39)

QN0020330

Which number is divisible by 2, 3, 4, and 6?

(A) 248
(B) 324
(C) 456
(D) 515

Correct Answer: C

Explanation:

456 satisfies all the divisibility conditions.

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Question (40)

QN0020331

The key idea behind decoding divisibility tricks is recognizing:

(A) Random digits
(B) Number patterns and properties
(C) Geometrical shapes
(D) Algebraic equations only

Correct Answer: B

Explanation:

Divisibility rules are based on number patterns and properties.

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Question (31)

A number ending in 0 is always divisible by:

Explanation:

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Question (32)

Which number is divisible by 5 but not by 2?

Explanation:

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Question (33)

The sum of digits of 999 is:

Explanation:

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Question (34)

Therefore, 999 is divisible by:

Explanation:

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Question (35)

Which number is divisible by 4 but not by 8?

Explanation:

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Question (36)

The last three digits of 5324 are:

Explanation:

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Question (37)

Which divisibility rule depends on the sum of digits?

Explanation:

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Question (38)

Divisibility tricks are mainly used to:

Explanation:

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Question (39)

Which number is divisible by 2, 3, 4, and 6?

Explanation:

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Question (40)

The key idea behind decoding divisibility tricks is recognizing:

Explanation:

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