Question

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

Answer 1

Answer:

1) 5050 2) 555

Step-by-step explanation:

1 + 2 + 3 + ......100 terms

formula S = n ( n+1 ) /2 ; n = 100

S = 100 (100 + 1) /2 = 5050

now.....

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

since a2 - a1 = 0.1 = a3 - a2

it's an AP with a = 0.6 ; d = 0.1 ; n = 100

formula : S = n/2 ( 2a + (n-1) d )

S = 100/2 ( 2×0.6 + 99 × 0.1 ) = 555