Question

please tell me answer of this solve and tell answer and send photo​

Answer 1

Step-by-step explanation:

Ok u can search it on doubtnut na

Answer 2

Step-by-step explanation:

1+2+3+...+100

= n(n+1)/2

n=100

= 100*(101)/2

= 50*101

= 5050

0.6,1.7,2.8,....100terms

T100 = 0.6+(100-1)*1.1

T100 = 109.5

=> S100 = n/2(a+Tn)

=> S100 = (100/2)*(0.6+109.5)

=> S100 = 5505