Maths Practice Question and Answer
8 Q:Directions : What will come in the place of the question mark (?) in the following number series?
2 4 11 37 ?
1753 05e9d2366bf0a265d837ba098
5e9d2366bf0a265d837ba098- 1151false
- 2152false
- 3153true
- 4154false
- 5None of thesefalse
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Answer : 3. "153 "
Q: The length, width and height of a rectangular tank are 7 meters, 6 meters and 5 meters respectively, what will be the volume (cubic metre) of this tank?
1753 05f9bf34da0effa5d624cfc0b
5f9bf34da0effa5d624cfc0b- 1100false
- 2102false
- 3210true
- 4420false
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Answer : 3. "210 "
Q: The bar graph given below shows the production of sugar (in lakh tonnes) by two different companies P and Q for the given years.
J1 = percentage increase in production of sugar of company P from 1991 to 1995.
J2 = percentage increase in production of sugar of company Q from 1992 to 1994.
What is the value of J1 + J2?
1752 06450ab5b13eb5908ae2dc657
6450ab5b13eb5908ae2dc657- 148 percentfalse
- 280.11 percenttrue
- 386.22 percentfalse
- 476.11 percentfalse
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Answer : 2. "80.11 percent"
Q: The perimeter of a square and an equilateral triangle is the same if the length of the diagonal of the square is $$ {12 \ sqrt {2}} $$ cm. If, what will be the area of the triangle?
1751 05f8043de88aba328edafaf6a
5f8043de88aba328edafaf6a- 1$$ {64\sqrt{3}}$$ sq.cmtrue
- 2$$ {32\sqrt{3}}$$ sq.cmfalse
- 3$$ {24\sqrt{3}}$$ sq.cmfalse
- 4$$ {28\sqrt{3}}$$ sq.cmfalse
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Answer : 1. "$$ {64\sqrt{3}}$$ sq.cm"
Q: A trade buys 800 kgs of tomatoes for Rs 7200. 10% tomatoes are damaged in transportation. At what rate (Rs / kg) should he sell the rest earn 30 % profit?
1750 05f0ecea3f4c8bf4bad02134a
5f0ecea3f4c8bf4bad02134a- 110false
- 212false
- 39false
- 413true
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Answer : 4. "13 "
Q: At what approximate time between 4 and 5 am will the hands of a clock be at right angle ?
1750 05fca52f3cfcd6675cfd49229
5fca52f3cfcd6675cfd49229- 14 : 35 amfalse
- 24 : 39 amfalse
- 34 : 40 amfalse
- 44 : 38 amtrue
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Answer : 4. "4 : 38 am"
Q: The angle of elevation of the sun, when the length of the shadow of a tree √3 times the height of the tree, is:
1750 05ee057fcca41b347ed32fd83
5ee057fcca41b347ed32fd83- 1$$ {30^0}$$true
- 2$$ {45^0}$$false
- 3$$ {60^0}$$false
- 4$$ {90^0}$$false
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Answer : 1. "$$ {30^0}$$"
Q: If the population of a town is 12.000 and the population increases at the rate of 10% per annum, then find the population. after 3 years.
1750 06426e27c72ca731a990e28e2
6426e27c72ca731a990e28e2- 115,972true
- 212,200false
- 311,200false
- 410,200false
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Answer : 1. "15,972"
Explanation :
To find the population after 3 years given that it increases at a rate of 10% per annum, you can use the formula for exponential growth:
𝑃=𝑃0×(1+𝑟)𝑛P=P0×(1+r)n
Where:
- 𝑃P = Population after 𝑛n years
- 𝑃0P0 = Initial population
- 𝑟r = Rate of increase (in decimal form)
- 𝑛n = Number of years
Given:
- 𝑃0=12,000P0=12,000 (Initial population)
- 𝑟=0.10r=0.10 (10% increase per annum)
- 𝑛=3n=3 (Number of years)
Substitute these values into the formula:
𝑃=12,000×(1+0.10)3P=12,000×(1+0.10)3
𝑃=12,000×(1.10)3P=12,000×(1.10)3
𝑃=12,000×(1.331)P=12,000×(1.331)
𝑃=15,972P=15,972
So, the population after 3 years would be approximately 15,972.