Q30Multiple choice
- (a)(–1) × (–1)
- (b)(–1) × (–1) × (–1)
- (c)(–1) × (–1) × (–1) × (–1)
- (d)(–1) × (–1) × (–1) × (–1) × (–1) × (–1) In Questions 31 to 71, fill in the blanks to make the statements true.
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(b) (–1) × (–1) × (–1)
(b) (–1) × (–1) × (–1)