Question

7. (-1)×(-1)×(-1)........up to 200 times is equal to

Answer 1

Answer:

1

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Answer 2

If -1 is multiplied by itself even number of times, then the product will be always 1.

For example-

(-1)x(-1)=1(-1 multiplied by itself 2 times,which is an even number ,gives positive value of 1)

Similarly,(-1)x(-1)x(-1)x(-1)=1(-1 multiplied by itself 4 times, which is an even number ,gives positive value of 1)

So,here-1 is multiplied by itself 200 number of times which is an even number.

Hence,the product is 1

Step-by-step explanation: