Study the following information carefully to answer the questions that follow :
A box contains 2 blue caps, 4 red caps, 5 green caps and 1 yellow cap.
If one cap is picked at random, what is the probability that it is either blue or yellow ?
If three caps are picked at random, what is the probability that two are red and one is green ?
For the following questions answer them individually
What would be the cost of building a fence around a square plot with area equal to 361 sq. ft. if the price per foot of building the fence is Rs. 62 ?
What would be the compound interest accrued on an amount of Rs. 8000 at the rate of 15 p.c.p.a. in three years ?
The ages of Shirish and Kunder are in the ratio of 5 : 6 respectively. After 8 years the ratio of their ages will be 7 : 8. What is the difference in their ages
The difference between a two digit number and the number obtained by interchanging the two digits of the number is 9. If the sum of the two digits of the number is 15, then what is the original number?
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