Question
Find the sum of all those 3-digit numbers which when
divided by 10 leave a remainder of 5.Solution
Numbers 105, 115, 125, ……985, 995 first number (a) = 105 The last number (8) = 995 All difference (d) =10 From the formula, nth term (Tn) = a + (n-1) d, 995=105+(n-1) 10  n = 90  Sum of n terms (Sn) =n/2 [2a+(n-1) d]  90/2[2 ×105+ (90-1)10] = 45 [210+890] = 45 × 1100  = 49500.
Recently BCCI has lifted ban from a state cricket association. The state is:
Which amongst the following nations is not a member of the ASEAN?
On which date was the World Trade Organization (WTO) established?
1.     Which of the following is not a permanent member of United Nation Security Council (UNSC)?
Which state/UT topped India’s literacy rankings in 2023–24 with full literacy achievement?Â
Which Indian bank received a $500 million loan from the International Finance Corporation (IFC) to support green project financing?
Which act gave the power to declare ordinance to Viceroy for the first time?
The Raslila dance is associated with which Hindu deity?
Great Bear' is the name of a:
Name the city which is visited most by the international travellers in 2017?Â
Relevant for Exams:
