What is the sum of the first 20 terms of the series 6, 11, 16, 21, ...?


A

1010


B

1190


C

1260


D

1070


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Updated: 20 hours ago

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A solution contains 25% sugar by weight is made sweeter by doubling the amount of sugar. The percent of sugar, by weight, in the new solution is-

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32%

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D

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x2 + y2 = 225 এবং x - y = 3 হলে (x, y) = ?

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(8, 5)

B

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C

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D

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9x2 + 16y2 এর সাথে কত যোগ করলে যোগফল পূর্ণবর্গ রাশি হবে?

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B

6xy

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144xy

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