smriteetamang54 smriteetamang54

10-08-2021
Mathematics

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what is the sum of 1+2+.....+50?

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Аноним Аноним

10-08-2021

Answer:

sum is 1275

Step-by-step explanation:

[tex]sum = \frac{n}{2} [2a + (n - 1)d] \\ \\ sum = \frac{50}{2} [(2 \times 1) + (50 - 1) \times 1] \\ \\ sum = 25(51) \\ sum = 1275[/tex]

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