যদি (a - b)2 = 16 এবং ab = 3 হয়, তবে a2 + b2 = কত? 

A

18

B

 28

C

 22

D

 32

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Updated: 5 months ago

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x/y এর সাথে কত যোগ করলে যোগফল y/x হবে?

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B

(2x2 - y2) / xy

C

(y2 - x2) / xy

D

(x2 - 2y2) / xy

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92x - 5 = 1/27 হলে, x এর মান কত?

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A

7/4

B

5/4

C

3/4

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The sum of the ages of a father and son is 68 years. Four years ago, the father was five times as old as his son. What is the present age of the son?

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A

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B

14 years

C

16 years

D

20 years

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