18
Q:

In a group of buffaloes and ducks, the number of legs are 24 more than twice the number of heads. What is the number of buffaloes in the group ?

A) 6 B) 10
C) 8 D) 12

Answer:   D) 12



Explanation:

Let the number of buffaoes be x and number of ducks be y.

Then 4x + 2y = 2(x + y) + 24  

=> 2x = 24

=> x = 12.

Q:

The value of: 7.5 + (5.4 ÷ 4.5 × 2) − 8 × 4 ÷ 3.2

 

A) -0.2 B) 0.1
C) -0.1 D) 0.2
 
Answer & Explanation Answer: C) -0.1

Explanation:
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0 2
Q:

If a : b = 2 : 3, then (5a + 3b) : (6a — 2b) is equal to:

 

A) 3 : 2 B) 17 : 5
C) 10 : 7 D) 19 : 6
 
Answer & Explanation Answer: D) 19 : 6

Explanation:
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0 3
Q:

If a + b + c = 6 and ab + bc + ca = 5, then a^3 + b^3 + c^3 - 3abc is equal to:

 

A) 108 B) 126
C) 98 D) 116
 
Answer & Explanation Answer: B) 126

Explanation:
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0 139
Q:

The value of: 3.8 + (8.2 div 4.1 times 2) - 4 times 3 div 1.2

 

A) 1.2 B) -2.2
C) 2.2 D) -1.2
 
Answer & Explanation Answer: B) -2.2

Explanation:
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0 28
Q:

The value of : 108 ÷ 36 × 4 + 2.5 × 4 ÷ 0.5 − 10

 

A) 20 B) 22
C) 16 D) 18
 
Answer & Explanation Answer: B) 22

Explanation:
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0 61
Q:

The value of -5/2 + 3/2 / 6 x 1/2 is equal to

 

A) -1/3 B) -1/12
C) -19/8 D) -9/8
 
Answer & Explanation Answer: C) -19/8

Explanation:
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0 153
Q:

In a circle of radius 17 cm, a chordis at a distance of 8 cm from the centre of the circle. What is the length of the chord?

 

A) 20 cm B) 15 cm
C) 25 cm D) 30 cm
 
Answer & Explanation Answer: D) 30 cm

Explanation:
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0 246
Q:

In ABC, P is a point on BC such that BP : PC = 4 : 11. If Q is the midpoint of BP, then ar( ABQ) : ar( ABC) is equal to:

 

A) 2:11 B) 2:15
C) 3:13 D) 2:13
 
Answer & Explanation Answer: B) 2:15

Explanation:
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0 190