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Postgraduate level — Quantitative Ability

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quiz Questions

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Q41

Find the LCM of 65 and 79.

1 · 2 marks · MCQ

A.

144

B.

1

C.

5149

D.

5135

Explanation

LCM(65,79) = (65×79)/HCF = 5135.

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Q42

Find the HCF (GCD) of 119 and 114.

2 · 2 marks · MCQ

A.

9

B.

1

C.

5

D.

13566

Explanation

HCF(119,114) = 1 using prime factorisation / Euclid's algorithm.

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Q43

Find the LCM of 12 and 97.

3 · 2 marks · MCQ

A.

1164

B.

1168

C.

1

D.

109

Explanation

LCM(12,97) = (12×97)/HCF = 1164.

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Q44

Find the HCF (GCD) of 112 and 105.

4 · 2 marks · MCQ

A.

7

B.

1680

C.

259

D.

12

Explanation

HCF(112,105) = 7 using prime factorisation / Euclid's algorithm.

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Q45

Find the LCM of 45 and 54.

5 · 2 marks · MCQ

A.

279

B.

99

C.

270

D.

9

Explanation

LCM(45,54) = (45×54)/HCF = 270.

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Q46

Find the HCF (GCD) of 98 and 111.

1 · 2 marks · MCQ

A.

13

B.

1

C.

10878

D.

9

Explanation

HCF(98,111) = 1 using prime factorisation / Euclid's algorithm.

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Q47

Find the LCM of 31 and 25.

2 · 2 marks · MCQ

A.

56

B.

775

C.

1

D.

790

Explanation

LCM(31,25) = (31×25)/HCF = 775.

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Q48

Find the HCF (GCD) of 46 and 92.

3 · 2 marks · MCQ

A.

92

B.

46

C.

49

D.

845

Explanation

HCF(46,92) = 46 using prime factorisation / Euclid's algorithm.

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Q49

Find the LCM of 19 and 104.

4 · 2 marks · MCQ

A.

1

B.

123

C.

1986

D.

1976

Explanation

LCM(19,104) = (19×104)/HCF = 1976.

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Q50

Find the HCF (GCD) of 117 and 110.

5 · 2 marks · MCQ

A.

1

B.

12870

C.

7

D.

8

Explanation

HCF(117,110) = 1 using prime factorisation / Euclid's algorithm.