Question

2.Find the sum of first 127 odd natural numbers. lesson- 3 Arithmetic Progression write in detail​

Answer 1

Answer:

first odd number is 1 and the sequence is 1 3 5 7 .......127 now sum = n/2×2a+(n-1)d here a= 1 , d= 3-1=5-3..= 2 n = 127 then calculate