Question

(ii) Complete the following activity to find the sum of natural numbers between
and 140 which are divisible by 4.
The numbers between 1 and 140 divisible by 4 are 4, 8, 12, ..., 136
Here, a=4, d=4, tn= 136
tn=a+ (n-1)d ... (Formula)
.. 136 =_____ +(n-1) 4
..n=____
Sn=n/2_____ ... (Formula)
..S34=34/2[8 +(34 – 1) x4]
S34=____​

Answer 1

Answer:

answer of that chemistry question

1) SO2 and SO3 that smell like rotten egg

2) brown colour

3)decomposition reaction