1.

Find the ratio of HCF to LCM of 5,15,20​

Answer»

Answer:

nth term of an A.P (an) = pn + q

To FIND: COMMON Difference (d)

PROOF: We KNOW that,

an = a + (N – 1)d

⇒ pn + q = a + (n – 1)d [given]

⇒ pn + q – a = (n – 1)d



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