Q1)-There are 15 boys and 10 girls in a class. If three students are selected at random, what is the probability that 1 girl and 2 boys are selected?
Q2)-In a shop, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, find out approximately what percentage of the selling price is the profit?
Q3)-Kamal started a business with Rs.25000 and after 4 months, Kiran joined him with Rs.60000. Kamal received Rs.58000 including 10% of profit as commission for managing the business. What amount did Kiran receive?
Q4)-What is the probability of selecting a prime number from 1,2,3,... 10 ?
Q5)-A vendor bought bananas at 6 for a rupee. How many for a rupee must he sell to gain 20%?
Q6)-A can do thrice as much work as B can complete in a day. C can complete half as much work as A and B do together can complete in a day. If C alone can complete a work in 33 days, then in how many days A alone would complete the work?
Q7)-A starts a business with a capital of Rs. 85,000. B joins in the business with Rs.42500 after some time. For how much period does B join, if the profits at the end of the year are divided in the ratio of 3 : 1?
Q8)-A box contains 2 blue, 3 green and 5 red balls. If three balls are drawn at random, what is the probability that exactly 2 balls are same in color?
Q9)-The present worth of a sum due sometimes hence is Rs.5760 and the banker's gain is Rs.10. What is the true discount?
Q10)-Two alloys contain copper and zinc in the ratio of 2 : 3 and 3 : 5 respectively. 25 kg of first alloy, 40 kg of second alloy and some quantity of pure copper are melted together. If in final alloy the ratio of copper and zinc is 11 : 8, find the amount of pure zinc that is melted.
1/40
1/2
21/46
7/42
Ans.- C
Q2)-In a shop, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, find out approximately what percentage of the selling price is the profit?
250 %
100 %
70 %
30 %
Ans.- C
Q3)-Kamal started a business with Rs.25000 and after 4 months, Kiran joined him with Rs.60000. Kamal received Rs.58000 including 10% of profit as commission for managing the business. What amount did Kiran receive?
75000
70000
72000
78000
Ans.- C
Q4)-What is the probability of selecting a prime number from 1,2,3,... 10 ?
2/5
1/5
3/5
1/7
Ans.- A
Q5)-A vendor bought bananas at 6 for a rupee. How many for a rupee must he sell to gain 20%?
3
4
5
6
Ans.- C
Q6)-A can do thrice as much work as B can complete in a day. C can complete half as much work as A and B do together can complete in a day. If C alone can complete a work in 33 days, then in how many days A alone would complete the work?
47 days
51 days
66 days
55 days
Ans.- C
Q7)-A starts a business with a capital of Rs. 85,000. B joins in the business with Rs.42500 after some time. For how much period does B join, if the profits at the end of the year are divided in the ratio of 3 : 1?
5 months
6 months
7 months
8 months
Ans.- D
Q8)-A box contains 2 blue, 3 green and 5 red balls. If three balls are drawn at random, what is the probability that exactly 2 balls are same in color?
13/120
79/120
13/180
12/95
Ans.- B
Q9)-The present worth of a sum due sometimes hence is Rs.5760 and the banker's gain is Rs.10. What is the true discount?
Rs 480
Rs 420
Rs 120
Rs 240
Ans.- D
Q10)-Two alloys contain copper and zinc in the ratio of 2 : 3 and 3 : 5 respectively. 25 kg of first alloy, 40 kg of second alloy and some quantity of pure copper are melted together. If in final alloy the ratio of copper and zinc is 11 : 8, find the amount of pure zinc that is melted.
30 kg
34 kg
25 kg
20 kg
Ans.- A
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