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Quantitative Ability Topics

Postgraduate level — Quantitative Ability

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quiz Questions

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Q11

Find the LCM of 42 and 52.

1 · 2 marks · MCQ

A.

1092

B.

2

C.

94

D.

1097

Explanation

LCM(42,52) = (42×52)/HCF = 1092.

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Q12

Find the HCF (GCD) of 34 and 66.

2 · 2 marks · MCQ

A.

10

B.

2

C.

32

D.

1122

Explanation

HCF(34,66) = 2 using prime factorisation / Euclid's algorithm.

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Q13

Find the LCM of 99 and 90.

3 · 2 marks · MCQ

A.

189

B.

990

C.

994

D.

9

Explanation

LCM(99,90) = (99×90)/HCF = 990.

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Q14

Find the HCF (GCD) of 103 and 120.

4 · 2 marks · MCQ

A.

17

B.

12360

C.

1

D.

4

Explanation

HCF(103,120) = 1 using prime factorisation / Euclid's algorithm.

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Q15

Find the LCM of 68 and 62.

5 · 2 marks · MCQ

A.

2108

B.

130

C.

2119

D.

2

Explanation

LCM(68,62) = (68×62)/HCF = 2108.

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Q16

Find the HCF (GCD) of 35 and 83.

1 · 2 marks · MCQ

A.

3

B.

48

C.

1

D.

2905

Explanation

HCF(35,83) = 1 using prime factorisation / Euclid's algorithm.

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Q17

Find the LCM of 120 and 105.

2 · 2 marks · MCQ

A.

840

B.

15

C.

225

D.

846

Explanation

LCM(120,105) = (120×105)/HCF = 840.

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Q18

Find the HCF (GCD) of 52 and 99.

3 · 2 marks · MCQ

A.

5

B.

47

C.

1

D.

5148

Explanation

HCF(52,99) = 1 using prime factorisation / Euclid's algorithm.

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Q19

Find the LCM of 119 and 72.

4 · 2 marks · MCQ

A.

191

B.

8580

C.

8568

D.

1

Explanation

LCM(119,72) = (119×72)/HCF = 8568.

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Q20

Find the HCF (GCD) of 108 and 37.

5 · 2 marks · MCQ

A.

71

B.

3996

C.

1

D.

9

Explanation

HCF(108,37) = 1 using prime factorisation / Euclid's algorithm.