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3, 6, 9, x সংখ্যা চাৰিটা সমানুপাতত থাকিলে x ৰ মান হ’ব

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3, 6, 9, x সংখ্যা চাৰিটা  সমানুপাতত থাকিলে x ৰ মান হ’ব

If 3, 6, 9, x are in proportion then the value of x will be

(a) 10

(b) 12

(c) 16

(d) 18

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Best answer

Correct option is (d) 18

Solution:

3, 6, 9 x are in proportion

3/6 = 9/x 

3x = 54

x = 54/3

x = 18

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