Question

Observe the pattern:
1. 1+2+3 = 6=3x (3 + 1)×1/2=
2. 1+2+3+4=10 = 4x(4+1)x1/2=
3. 1+2+3+4+5=15=5x(5 + 1) x1/2=
Now write the pattern for the following:
ei
1. 1+2+3+4+5+6+7 +8+9+10=
2. 1+2+3+4+5+6+7 + 8 + 9 +10 +11+12 +13
+14+15+16+17+18 +19+ 20 =
ic
3. 1 + 2 + ... + ... + 25 =​

Answer 1

Answer:

1. 4/2 is the Answer. Ok. Ok. Ok.

Answer 2

Answer:

1. = sum of first ten +integers = 47

2. sum of first thirteen Integers = 83

3. sum of first twenty-five integers = ????

bhai tu kar lena ! itna easy toh hai !