find square root without adding 1+3+5+7+9+11 +13+15+17+19
Answers
Answered by
1
Answer:
The answer is 10
Step-by-step explanation:
Use formula n(n+1)/2 to find the sum
Answered by
0
Step-by-step explanation:
8100 is the answer.because all digits multiply i find 90. so we multiply 90×90-8100
Similar questions