Question

2. Find the sum of odd numbers between 0 and 50.​

Answer 1

Answer:

to find the sum of the odd numbers

a= 1,tn= 49 , d = 2

tn = a +( n-1 )d

49 = 1 + ( n-1)2

49- 1= ( n- 1) 2

48 / 2 = n-1

24=n-1

24+ 1 = n

n= 25

sn = n/2 ( 2a + ( n-1) d )

s 25 = 25/ 2 ( 2x 1 + ( 25-1) 2

s25 = 25/2 ( 2+ 48 )

s25 = 25 x 25

s25 = 625

therefore the sum is 625

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Answer 2

Answer:

625

Step-by-step explanation:

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