1.

Common prime factors of 30 and 250 are(a) 2 x 5(b) 3 x 5(c) 2 x 3 x 5(d) 5 x 5

Answer»

(a) 2 x 5

Prime factors of 30 are 2 x 3 x 5

Prime factors of 250 are 5 x 5 x 5 x 2

∴ Common prime factors are 2 x 5.



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