Question

please answer this and if don't know then please please please please please please leave it no need to answer i have to ask same questions 2 times if don't know then no need to answer



AND PLEASE I WANT THE FULL EXPLANATION BECAUSE TODAY IS MY TEST AND I DON'T KNOW THE ANSWER OF THIS QUESTION


PLEASE HELP ME


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Answer 1

Answer:

i) 0

ii) -125

Step-by-step explanation:

in first part all will cancelled out as 30 is a even no. and in second part one 125 will be left as 71 is a odd no.

Answer 2

Step-by-step explanation:

1.

if the number of terms is even then we get the answer as 0

30 is an even number so the answer is 0

2.

if the number of terms is odd then we get the same number

71 is odd number so the answer is -125

I WILL BE HAPPY IF THIS

ANSWER HELPED U