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Question (1)

QN0018920

Which of the following numbers can be written as a sum of two consecutive natural numbers?

(A) 12
(B) 15
(C) 18
(D) 20

Correct Answer: B

Explanation:

15 = 7 + 8.

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Question (2)

QN0018921

Which of the following is a sum of four consecutive natural numbers?

(A) 22
(B) 24
(C) 26
(D) 28

Correct Answer: A

Explanation:

4 + 5 + 6 + 7 = 22.

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Question (3)

QN0018922

The sum of four consecutive numbers is 34. What is the smallest number?

(A) 6
(B) 7
(C) 8
(D) 9

Correct Answer: B

Explanation:

7 + 8 + 9 + 10 = 34.

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Question (4)

QN0018923

If p is the greatest among five consecutive numbers, the smallest number is:

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

Correct Answer: B

Explanation:

The five numbers are p – 4, p – 3, p – 2, p – 1 and p.

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Question (5)

QN0018924

Which expression represents all numbers leaving remainder 3 when divided by 5?

(A) 3k + 5
(B) 5k + 3
(C) 5k – 3
(D) 3k – 5

Correct Answer: B

Explanation:

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Question (6)

QN0018925

Numbers of the form 5k + 3 leave a remainder of:

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

Correct Answer: C

Explanation:

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Question (7)

QN0018926

If a number leaves remainder 2 when divided by 3 and by 4, then the smallest such number is:

(A) 10
(B) 12
(C) 14
(D) 18

Correct Answer: C

Explanation:

14 leaves remainder 2 on division by both 3 and 4.

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Question (8)

QN0018927

Which algebraic expression represents all numbers leaving remainder 2 when divided by both 3 and 4?

(A) 12n + 2
(B) 7n + 2
(C) 6n + 2
(D) 24n + 4

Correct Answer: A

Explanation:

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Question (9)

QN0018928

A number leaves remainder 3 when divided by 5. Which of the following is such a number?

(A) 17
(B) 18
(C) 19
(D) 20

Correct Answer: B

Explanation:

18 ÷ 5 leaves remainder 3.

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Question (10)

QN0018929

Which statement is correct?

(A) Every even number can be written as a sum of two consecutive numbers.
(B) Every odd number can be written as a sum of two consecutive numbers.
(C) Every odd number can be written as a sum of three consecutive numbers.
(D) No odd number can be written as a sum of consecutive numbers.

Correct Answer: B

Explanation:

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Question (1)

Which of the following numbers can be written as a sum of two consecutive natural numbers?

Explanation:

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Question (2)

Which of the following is a sum of four consecutive natural numbers?

Explanation:

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Question (3)

The sum of four consecutive numbers is 34. What is the smallest number?

Explanation:

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Question (4)

If p is the greatest among five consecutive numbers, the smallest number is:

Explanation:

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Question (5)

Which expression represents all numbers leaving remainder 3 when divided by 5?

Explanation:

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Question (6)

Numbers of the form 5k + 3 leave a remainder of:

Explanation:

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Question (7)

If a number leaves remainder 2 when divided by 3 and by 4, then the smallest such number is:

Explanation:

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Question (8)

Which algebraic expression represents all numbers leaving remainder 2 when divided by both 3 and 4?

Explanation:

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Question (9)

A number leaves remainder 3 when divided by 5. Which of the following is such a number?

Explanation:

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Question (10)

Which statement is correct?

Explanation:

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