Question

If 1+2+3+..... +100 = 5050 and 1+2+3+ ..... +200 = 20100, then 101+102 +103 + ..... +200=​

Answer 1

Step-by-step explanation:

let the no. be x

1).1+2+3+x+100=5050

x+106=5050

x=5050-106

x=4944

so, 1+2+3+4944+100=5050

2).1+2+3+x+200=20100

x+206=20100

x=20100-206

x=19894

so, 1+2+3+19894+200=20100

3). your question is not specifically correct...