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What is the sum of the first 25 odd natural numbers?1). 4752). 5753). 6004). 625 |
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Answer» The numbers are 1, 3, 5, 7…., 49 Sum of N terms of an AP = n/2 × {2a + (n - 1)d} Where a is the first term, n is the number of terms and d is the common DIFFERENCE First term of the series (a) is 1 Common difference (d) = 3 - 1 = 2 and n is 25 Sum = 25/2 × (2 + 24 × 2) = 625 |
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