A bag contains 15 red balls and 20 black balls. Each ball is numbered either 1 or 2 or 3. 20% of the red balls are numbered 1 and 40% of them are numbered 3. Similarly, among the black balls, 45% are numbered 2 and 30% are numbered 3. A boy picks a ball at random. He wins if the ball is red and numbered 3 or if it is black and numbered 1 or 2. What are the chances of his winning?
Maths PYQs from 2018
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A number consists of three digits of which the middle one is zero and their sum is 4. If ‘he number formed by interchanging the first and last digits is greater than the number itself by 198, then the difference between the first and last digits is
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There are 24 equally spaced points lying on the circumference of a circle. What is the maximum number of equilateral triangles that can be drawn by taking sets of three points as the vertices?
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While writing all the numbers from 700 to 1000, how many numbers occur in which the digit at hundred's place is greater than the digit at ten's place, and the digit at ten's place is greater than the digit at unit's place?
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Direction for the following 2 (two) items :
63
Consider the following graph in which the birthrate and death rate of a country are given, and answer the two items that follow.
Looking at the graph, it can be inferred that from 1990 to 2010
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Consider the following figures A and B:
67
The manufacturing cost and projected sales for a product are shown in the above figures A and B respectively. What is the minimum number of pieces that should be manufactured to avoid a loss?
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With reference to the above graph, consider the following statements considering 1970 as base year:
- Population has stabilized after 35 years.
- Population growth rate has stabilized after 35 years.
- Death rate has fallen by in the first 10 years.
- Birthrate has stabilized after 35 years.
Which of the above are the most logical and rational statements that can be made from the above graph?
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