1.Given that HCF (135,225)=45.Find LCM (135,225)
2.State Euclid's Division Lemma and hence find HCF of 16 and 28.
3.State fundamental theorem of Arithmetic and hence Check whether 5×6×2×3+3is a composite number.
4.Prove that 1/2−√5 is irrational number.
5.If the HCF of 210 and 55 is expressible in the form 210×5+55y then find y.