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If one person buys the same number of lemons as 13 for 2 rupees and 20 for ₹4 rupees, and sells all as 6 for ₹1, what is the maximum profit or loss?

Defence ki tayari krni h koi stydy level bta dega please

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When , rrb ntpc exam conducted

Ram borrows a sum of money from Shyam for a period of 5 years. Ram paid 9/8
times the sum after 5 years. Find the rate of simple interest.

Half of the volume of petrol and kerosene mixture of ratio 7:5 is converted into a mixture of ratio 3:1 by the replacement method. While the mixture of ratio 7:5 was formed from the mixture of 7:3 by adding the kerosene in it . If 240 ltr petrol is required in the replacement method, what is the total amount of kerosene was added to prepare the mixture of 7:5 ?

1600 satellites were sent up by a country for several purposes. The purposes are classified as broadcasting (B), communication (C), surveillance (S), and others (O). A satellite can serve multiple purposes; however a satellite serving either B, or C, or S does not serve O. The following facts are known about the satellites:

1. The numbers of satellites serving B, C, and S (though may be not exclusively) are in the ratio 2:1:1.
2. The number of satellites serving all three of B, C, and S is 100.
3. The number of satellites exclusively serving C is the same as the number of satellites exclusively serving S. This number is 30% of the number of satellites exclusively serving B.
4. The number of satellites serving O is the same as the number of satellites serving both C and S but not B.

What best can be said about the number of satellites serving C?

option are

1)at least 100
2)cannot be more than 800
3)450 to 725 correct
4)

Abc is a right angled triangle in which ∠a = 90°, ab = 5 cm and ac = 12 cm. what is the approximate volume (in cm3) of the double cone formed by rotating the triangle about its hypotenuse?