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Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

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Mathematics
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Given that: \[\sqrt{2} = 1 . 414, \sqrt{3} = 1 . 732, \sqrt{5} = 2 . 236 \text{ and } \sqrt{7} = 2 . 646,\]  find the square root of the following:

\[\frac{25}{50}\] 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Using square root table, find the square root
540 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Using square root table, find the square root
8700

 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
Concept: undefined >> undefined

Using square root table, find the square root
3509 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Using square root table, find the square root
6929 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Using square root table, find the square root
25725 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
Concept: undefined >> undefined

Using square root table, find the square root
1312 

 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Using square root table, find the square root
4192 

[5] Squares and Square Roots
Chapter: [5] Squares and Square Roots
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Find the difference between the compound interest and simple interest. On a sum of Rs 50,000 at 10% per annum for 2 years.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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What will Rs 125000 amount to at the rate of 6%, if the interest is calculated after every 3 months?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Find the compound interest at the rate of 5% for three years on that principal which in three years at the rate of 5% per annum gives Rs 12000 as simple interest.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Simple interest on a sum of money for 2 years at \[6\frac{1}{2} %\] per annum is Rs 5200. What will be the compound interest on the sum at the same rate for the same period?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Find the compound interest at the rate of 5% per annum for 3 years on that principal which in 3 years at the rate of 5% per annum gives Rs 1200 as simple interest.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Rachana borrowed a certain sum at the rate of 15% per annum. If she paid at the end of two years Rs 1290 as interest compounded annually, find the sum she borrowed.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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The interest on a sum of Rs 2000 is being compounded annually at the rate of 4% per annum. Find the period for which the compound interest is Rs 163.20.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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In how much time would Rs 5000 amount to Rs 6655 at 10% per annum compound interest?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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The difference between the S.I. and C.I. on a certain sum of money for 2 years at 4% per annum is Rs 20. Find the sum.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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In what time will Rs 1000 amount to Rs 1331 at 10% per annum, compound interest?

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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Kamala borrowed from Ratan a certain sum at a certain rate for two years simple interest. She lent this sum at the same rate to Hari for two years compound interest. At the end of two years she received Rs 210 as compound interest, but paid Rs 200 only as simple interest. Find the sum and the rate of interest.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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The difference between the compound interest and simple interest on a certain sum for 2 years at 7.5% per annum is Rs 360. Find the sum.

[7] Comparing Quantities
Chapter: [7] Comparing Quantities
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