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Quantitative Aptitude

Quantitative aptitude questions for competitive exams

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Difficulty: All Easy Medium Hard 331–340 of 429

Topics in Quantitative Aptitude

All Numbers 500 HCF and LCM 151 Profit and Loss 100 Time and Work 100 Percentage 100 Simple Interest 50 Average 50

Q.331 Easy Numbers

Find the LCM of 12 and 18.

A 24

B 36

C 48

D 60

Correct Answer: B. 36

EXPLANATION

12 = 2² × 3; 18 = 2 × 3². LCM = 2² × 3² = 4 × 9 = 36.

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Q.332 Easy Numbers

What is the HCF of 48 and 64?

A 8

B 16

C 24

D 32

Correct Answer: B. 16

EXPLANATION

Find HCF of 48 and 64 using Euclidean algorithm: 64 = 48 × 1 + 16; 48 = 16 × 3 + 0. Therefore, HCF = 16.

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Q.333 Easy

A man earns Rs 15000/month and spends 60%. Savings?

A Rs 5000

B Rs 6000

C Rs 7000

D Rs 8000

Correct Answer: B. Rs 6000

EXPLANATION

Savings=40% of 15000=Rs 6000.

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Q.334 Easy

Find value of x: 3x/4 = 12

A 12

B 16

C 14

D 18

Correct Answer: B. 16

EXPLANATION

x=12×4/3=16.

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Q.335 Easy

Area of rectangle: length 12m, breadth 8m?

A 80 sq m

B 96 sq m

C 100 sq m

D 104 sq m

Correct Answer: B. 96 sq m

EXPLANATION

Area=12×8=96 sq m.

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Q.336 Easy

Sum of first 20 natural numbers?

A 200

B 210

C 190

D 220

Correct Answer: B. 210

EXPLANATION

n(n+1)/2=20×21/2=210.

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Q.337 Easy

If 4x - 3 = 17, what is x?

A 4

B 5

C 6

D 3

Correct Answer: B. 5

EXPLANATION

4x=20, x=5.

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Q.338 Easy

HCF of 36, 48, and 60 is?

A 6

B 12

C 18

D 24

Correct Answer: B. 12

EXPLANATION

HCF=12.

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Q.339 Easy

30% of a number is 90. Find the number.

A 270

B 300

C 250

D 320

Correct Answer: B. 300

EXPLANATION

x=90×100/30=300.

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Q.340 Easy

LCM of 12, 18, and 24?

A 36

B 72

C 48

D 60

Correct Answer: B. 72

EXPLANATION

LCM of 12,18,24=72.

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