

MCQOPTIONS
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1. |
Consider the first order predicate formula ϕ:∀x [(∀z z|x ⇒ ((z = x) ∨ (z = 1))) ⇒ ∃w (w > x) ∧ (∀z z|w ⇒ ((w = z) ∨ (z = 1)))]Here ‘a|b’ denotes that ‘a divides b’, where a and b are integers. Consider the followingsets:S1. {1,2,3, ... , 100}S2. Set of all positive integersS3. Set of all integersWhich of the above sets satisfy φ? |
A. | S1 and S2 |
B. | S1 and S3 |
C. | S2 and S3 |
D. | S1, S2 and S3 |
Answer» D. S1, S2 and S3 | |