Question

Eighteen integers are multiplied together. What will be the sign of their product, if
(i) 15 of them are negative and 3 are positive ?
(ii) 12 of them are negative and 6 are positive ?
(iii) 9 of them are positive and the remaining are negative ?
(iv) all are negative ?



specially (iii) and (iv)​

Answer 1

Answer:

ANSWER

Let the positive numbers be 1 and negative numbers be −1

Now,

(i)(−1)

15

(1)

3

=−1

(ii)(−1)

12

(1)

6

=1

(iii)(−1)

9

(1)

9

=−1

(iv)(−1)

18

=1

Answer 2

Answer:

1) -

2)+

3)-

4)+

hope this will help you