Q). In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:
A) 20 litres
B) 30 litres
C) 40 litres
D) 60 litres
Q). A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:
A) 1/22
B) 3/22
C) 2/91
D) 2/77
Q). If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?
A) 0.172
B) 1.72
C) 17.2
D) 172
Q). In a 100 m race, A beats B by 10 m and C by 13 m. In a race of 180 m, B will beat C by:
A) 5.4 meters
B) 4.5 meters
C) 5 meters
D) 6 meters
Q). If log 27 = 1.431, then the value of log 9 is:
A) 0.954
B) 0.934
C) 0.945
D) 0.958