- The minimum value of function y = x2 in the interval [1, 5] is

(C) 25 (D) undefined

- The vector field is F = xi - yj (where i and j are unit vector) is

(B) irrotational, but not divergence free

(C) divergence free and irrotational

(D) neither divergence free nor irrational

- From a pack of regular playing cards, two cards are drawn at random. What is the probability that both cards will be Kings, if first card in NOT replaced ?

(B) 1/52

(C)1/169

(D) 1/221

**Answer:**

1.(B)

2.(C)

3.(D)

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