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14.
(C)
15
√300 - √27 + √3
10√3 -3√3 + √3 = 8√3 (B)
16
4√6 x 5√3
20√18
20
20
20.3√2
60√2 (C)
17
√54 : √3
√18 = √9√.2 = √3² .√2
3√2 (A)