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Answer

Container —
A : 5u – 2u = 3u
B : 234 – 5u + 2u = 234 – 3u

3u – (234 – 3u) = 24
1u = (24 + 234)/(3 + 3) = 43
234 – 43 x 5 = 19

Ans : 19 marbles.

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