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Question (11)

QN0018970

Find the remainder when 5529 is divided by 11.

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

Correct Answer: C

Explanation:

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Question (12)

QN0018971

Which of the following numbers is divisible by 11?

(A) 857076
(B) 5529
(C) 481
(D) 158

Correct Answer: A

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Question (13)

QN0018972

In the divisibility rule for 11, the signs placed before digits are:

(A) All positive
(B) All negative
(C) Alternating + and –
(D) Random

Correct Answer: C

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Question (14)

QN0018973

Evaluate the alternating sum for 328105.

(A) –2
(B) –3
(C) –4
(D) –5

Correct Answer: B

Explanation:

–3 + 2 – 8 + 1 – 0 + 5 = –3.

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Question (15)

QN0018974

If the alternating sum of digits of a number is 22, then the number is:

(A) Not divisible by 11
(B) Divisible by 11
(C) Divisible by 22 only
(D) Odd

Correct Answer: B

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Question (16)

QN0018975

Which of the following is divisible by both 2 and 3?

(A) 225
(B) 38
(C) 186
(D) 61

Correct Answer: C

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Question (17)

QN0018976

A number divisible by both 2 and 3 is always divisible by:

(A) 5
(B) 6
(C) 8
(D) 9

Correct Answer: B

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Question (18)

QN0018977

Which number is divisible by 6?

(A) 64
(B) 225
(C) 186
(D) 91

Correct Answer: C

Explanation:

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Question (19)

QN0018978

To test divisibility by 24, it is sufficient to check divisibility by:

(A) 4 and 6
(B) 2 and 12
(C) 3 and 8
(D) 6 and 8

Correct Answer: C

Explanation:

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Question (20)

QN0018979

Why does checking divisibility by 4 and 6 fail for 24?

(A) 4 and 6 are primes
(B) Their product is 20
(C) A number may be divisible by both yet not by 24
(D) 24 is odd

Correct Answer: C

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