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A king wanted to reward his advisor, a w...

A king wanted to reward his advisor, a wise man of the kingdom. So he asked the wiseman to name his own reward. The wiseman thanked the king but said that he would ask only for some gold coins each day for a month. The coins were to be counted out in a pattern of one coin for the first day, 3 coins for the second day, 5 coins for the third day and so on for 30 days. Without making calculations, find how many coins will the advisor get in that month?

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NCERT EXEMPLAR-SQUARE - SQUARE ROOT AND CUBE-CUBE ROOT-Exercise
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  7. A king wanted to reward his advisor, a wise man of the kingdom. So he ...

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  8. Find three numbers in the ratio 2:3:5, the sum of whose squares is 608...

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  9. Find the smallest square number divisible by each one of the number...

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  11. Find the square root of 324.

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  12. Three numbers are to one another 2 : 3 : 4 : The sum of their cubes is...

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  13. Evaluate : root3(27)+root3(0.008)+root3(0.064)

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  15. Evaluate the following : {(5^2+12^2)^1}^3 (ii) {(6^2+8^2)^1}^3

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  16. 9.Put three different numbers in the circles so that when you add the ...

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  17. The perimeters of two squares are 40 and 96 metres respectively. Find ...

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  18. The perimeters of two squares are 40 and 96 metres respectively. Find ...

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  19. A three digit perfect square is such that if it is viewed upside down,...

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  20. 13 and 31 is a strange pair of numbers such that their squares 169 and...

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