Question

find the sum of consecutive number find the answer = 1+2+3+4+5+5....99+100=​

Answer 1

Answer:

100(100+1)/2

100×101/2

5050

Answer 2

Answer:

$\sf\huge\green{\underbrace{\red{Answer↓}}}:$

$\huge{\fcolorbox{gold}{blue}{5050}}$

Step-by-step explanation:

We can find the sum of any consecutive numbers from 1 to that number say n by using the following formula -

$\frac{n(n + 1)}{2}$

So, putting the value of 100 in the place of n, we can get the sum of all numbers from 1 to 100

$= \frac{100(100 + 1)}{2}$

$= \frac{100(101)}{2}$

$= \frac{ 100 \times 101}{2}$

$= \frac{10100}{2}$

$= 5050$

Therefore, the sum of all numbers from 1 to 100 is 5050