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Elementary Mathematics

Elementary Mathematics Topics

School level (Class 6–12) — Elementary Mathematics

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quiz Questions

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Q21

Find the LCM of 45 and 83.

1 · 2 marks · MCQ

A.

3735

B.

128

C.

1

D.

3741

Explanation

LCM(45,83) = (45×83)/HCF = 3735.

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Q22

Find the HCF (GCD) of 56 and 25.

2 · 2 marks · MCQ

A.

1400

B.

6

C.

1

D.

31

Explanation

HCF(56,25) = 1 using prime factorisation / Euclid's algorithm.

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Q23

Find the LCM of 118 and 118.

3 · 2 marks · MCQ

A.

739

B.

125

C.

118

D.

236

Explanation

LCM(118,118) = (118×118)/HCF = 118.

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Q24

Find the HCF (GCD) of 36 and 111.

4 · 2 marks · MCQ

A.

75

B.

8

C.

1332

D.

3

Explanation

HCF(36,111) = 3 using prime factorisation / Euclid's algorithm.

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Q25

Find the LCM of 41 and 65.

5 · 2 marks · MCQ

A.

106

B.

1

C.

2665

D.

2670

Explanation

LCM(41,65) = (41×65)/HCF = 2665.

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Q26

Find the HCF (GCD) of 59 and 93.

1 · 2 marks · MCQ

A.

3

B.

34

C.

1

D.

5487

Explanation

HCF(59,93) = 1 using prime factorisation / Euclid's algorithm.

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Q27

Find the LCM of 59 and 97.

2 · 2 marks · MCQ

A.

156

B.

5731

C.

5723

D.

1

Explanation

LCM(59,97) = (59×97)/HCF = 5723.

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Q28

Find the HCF (GCD) of 106 and 14.

3 · 2 marks · MCQ

A.

9

B.

742

C.

92

D.

2

Explanation

HCF(106,14) = 2 using prime factorisation / Euclid's algorithm.

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Q29

Find the LCM of 67 and 109.

4 · 2 marks · MCQ

A.

1

B.

7308

C.

7303

D.

176

Explanation

LCM(67,109) = (67×109)/HCF = 7303.

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Q30

Find the HCF (GCD) of 39 and 107.

5 · 2 marks · MCQ

A.

4173

B.

5

C.

1

D.

68

Explanation

HCF(39,107) = 1 using prime factorisation / Euclid's algorithm.