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3. How many three-digit numbers are divisible by 7​

Answer»

A.P.= 105,112,119--------------------994.Tn=994, a=105, D=7, n=?Tn = [a + (n-1)D]994 = [105 + (n-1)7]994-105 = (n-1)7889/7 = (n-1)127 = n-1Like it only when the ANSWER is correct....PLZZ



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