A box contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is 2/3. The number of blue balls in the jar is
13
12
16
8
D.
8
B.
160The population of a city is 250 thousand. It is increasing at the rate of 2% every year. The growth in the population after 2 years is
2500
10000
252000
10100
D.
10100
The denominator of a fraction is greater than its numerator by 11. If 8 is added to both its numerator and denominator, then it becomes ¾. The fraction is
25/26
35/26
26/35
25/36
D.
25/36
A sum was divided among P, Q & R. R got double than P who got double than Q. If the difference between the shares of Q and R is Rs. 3675.00, then the sum in rupees is
4900
8575
11025
7350
B.
8575
Table shows the daily expenditure on food of 25 households in a locality: Rs. 100-150 150-200 200-250 250-300 300-350 Households 4 5 12 2 2
The mean daily expenditure on food is
Rs. 111
Rs. 161
Rs. 211
Rs. 261
C.
Rs. 211
A rod of 2 cm diameter and 30 cm length is converted into a wire of 3 meter length of uniform thickness. The diameter of the wire is
2/10 cm
2/√10 cm
1/√10 cm
1/10 cm
B.
2/√10 cm