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Find the length of 13.2 kg of copper wire of diameter 4 mm, when 1 cubic cm of copper weighs 8.4 gm.
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| Length | breadth | height | |
| (i) | 2ax | 3by | 5cz |
| (ii) | m2n | n2p | p2m |
| (iii) | 2q | 4q2 | 8q3 |
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Find the greatest 4-digit number which is a perfect square.
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Check the divisibility of 152875 by 9.
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Divide 24(x2yz + xy2z + xyz2) by 8xyz using both the methods.
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Sum of two numbers is 74. One of the numbers is 10 more than the other. What are the numbers?
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What should be added to twice the rational number `(-7)/3 "to get" 3/7`?
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The perimeter of a rectangle is 13 cm and its width is `2 3/4` cm. Find its length.
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The present age of Sahil's mother is three times the present age of Sahil. After 5 years their ages will add to 66 years. Find their present ages.
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Bansi has 3 times as many two-rupee coins as he has five-rupee coins. If he has in all a sum of Rs. 77, how many coins of each denomination does he have?
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The difference between two whole numbers is 66. The ratio of the two numbers is 2: 5. What are the two numbers?
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Deveshi has a total of ₹ 590 as currency notes in the denominations of ₹ 50, ₹ 20, and ₹ 10. The ratio of the number of ₹ 50 notes and ₹ 20 notes is 3: 5. If she has a total of 25 notes, how many notes of each denomination she has?
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