Maths Practice Question and Answer
8 Q: In a school of 1200, students were asked how they travelled to school. The information obtained is depicted by a pie-chart as below. From the given information find how many students come to school by Car?
1832 05ebcc5347fbed1167f1cf2ae
5ebcc5347fbed1167f1cf2ae- 11000false
- 2504true
- 3900false
- 4750false
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Answer : 2. "504 "
Q: In an examination, 50% of the students passed in Science and 75% passed in Social Science, while 20% students failed in both the subjects. If 270 students passed in both subjects, find the total number of students who appeared in the exam?
1832 0611e174faed88c5ed9487a92
611e174faed88c5ed9487a92- 1600true
- 2750false
- 3400false
- 4540false
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Answer : 1. "600"
Q: The volume of a sphere and an elliptical cylinder are the same. The radius of the sphere and cylinder are 21 cm and 14 cm respectively. What is the height of the cylinder?
1832 05e3256211f73627362281733
5e3256211f73627362281733- 163 cmtrue
- 256 cmfalse
- 342 cmfalse
- 449 cmfalse
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Answer : 1. "63 cm"
Q: The twice of sum of the ages of a father and his son is 8 times the age of the son. If the average age of the father and the son is 30 years, what is father's age ? 1832 05b5cc6c9e4d2b4197774df83
5b5cc6c9e4d2b4197774df83- 142 yrsfalse
- 245 yrstrue
- 336 yrsfalse
- 438 yrsfalse
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Answer : 2. "45 yrs"
Explanation :
Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.
Q:Directions-Study the following diagram and answer the four questions.
The percentage of students securing marks less than 50 is
1831 05daea745622dcb0d26318ea7
5daea745622dcb0d26318ea7- 1$$ 28{4\over 7}%$$true
- 2$$ 25{5\over 7}%$$%false
- 3$$ 23{13\over 21}%$$%false
- 4$$ 47{13\over 21}%$$%false
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Answer : 1. "$$ 28{4\over 7}%$$"
Q: If each edge of a cube is reduced by 25 percent, find the ratio of the volume of the original cube and the resulting cube?
1831 05f892f0de6aa3e1d0bd22e80
5f892f0de6aa3e1d0bd22e80- 18:1false
- 227:64false
- 364:1true
- 464:27false
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Answer : 3. "64:1"
Q: When a diagonal of a square is 24 cm then find out of its perimeter.
1831 05e29387dc5bb926162863e56
5e29387dc5bb926162863e56- 128 cmfalse
- 248√2 cmtrue
- 336 √2 cmfalse
- 446 √2 cmfalse
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Answer : 2. "48√2 cm"
Q: In how much time the money of Rs 6400 will be Rs 6561 at the rate of 5 percent annual interest if the compound interest is payable quarterly?
1830 05fb4e118488efb77b437f157
5fb4e118488efb77b437f157- 16 Monthtrue
- 212 Monthfalse
- 324 Monthfalse
- 418 Monthfalse
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