Find the sum of first 45 odd numbers.
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Answered by
20
hola ♥️
The number series 1, 3, 5, 7, 9, . . . . , 89.
The first term a = 1
The common difference d = 2
Total number of terms n = 45
step 2 apply the input parameter values in the AP formula
Sum = n/2 x (a + Tn)
= 45/2 x (1 + 89)
= (45 x 90)/ 2
= 4050/2
1 + 3 + 5 + 7 + 9 + . . . . + 89 = 2025
Therefore, 2025 is the sum of first 45 odd numbers.
hope it helps ♥️
Answered by
2
Answer:
add first 45 odd number you will get your ans
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