Eighteen integers are multiplied together. What will be the sign of their product, if :
$12$ of them are negative and $6$ are positive ?

Q. 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 ?

Q. Eighteen integers are multiplied together. What will be the sign of their product, if:​
(iv)All are negative?​

Q.

15 Integers are multiplied together. If 10 of them are positive and 5 are negative, then the sign of their product will be negative.

Q. What will be the sign of the product if we together multiply $199$ negative integers and $10$ positive integers?