For the following questions answer them individually
A fruit seller buys oranges at the rate of ₹10 per dozen and sells at the rate of ₹12 per dozen. His gain percent is
The outer circumference of a circular race track is 528 metre. The track is every where 14 metre wide. Cost of levelling the track at the rate of ₹10 per sq. metre is:
If $$1^3 + 2^3 + .......... 10^3 = 3025$$, then the value of $$2^3 + 4^3 + .......... + 20^3$$ is:
A vessel contains 60 litres of milk. 12 liters of milk taken out from it and replaced by water. Then again from mixture. 12 litres are again taken out and replaced by water. The ratio of milk and water in the resultant mixture is:
If $$(2a-1)^2+(4b-3)^2+(4c+5)^2=0$$, Then the value of $$\frac{a^3+b^3+c^3-3abc}{a^2+b^2+c^2}$$ is:
If 20 women can lay a road of lengh 100 m in 10 days. 10 women can lay the same road of length 50m in:
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