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

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

Explanation:

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

Explanation:

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

Explanation:

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

Explanation:

0 28
Q:

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

 A) 20 B) 22 C) 16 D) 18

Explanation:

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

Explanation:

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

Explanation:

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