Question

Without adding find the sum of 1+3+5+7+9+11+13+15+17-19+21+23
pls fast

Answer 1

Here

• n=12
• d=2
• a=1
• l=23

Step-by-step explanation:

1. S=n/2(a+l)
2. ie S=12/2(1+23)
3. S=6×24
4. S=144

Answer 2

Answer:

106 is the answer for this question