6 वर्ष पूर्व शादी के समय पति व पत्नी की औसत आयु 26 वर्ष थी। अब
पति, पत्नि तथा एक बच्चे की औसत आयु 23 वर्ष है। बच्चे की आयु
कितनी है?
(A)3
(B)5
(C)8
(D) 12
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4
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The Dobson Unit is a way to describe how much ozone there would be in the column if it were all squeezed into a single layer. The average amount of ozone in the atmosphere is roughly 300 Dobson Units, equivalent to a layer 3 millimeters (0.12 inches) thick—the height of 2 pennies stacked together.
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Answer:
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