21)In the sequence 18, a, 14, 32, the common difference is:
22)If x < 0 and y > 0, then the point P(x, y) is in which quadrant?
23)What is the value of \( \csc 31^\circ \sec 59^\circ \)?
24)If a, b, c are in A.P., then \( \frac{a – b}{b – c} \) is equal to:
25)If a, b, c are in A.P., then \( \frac{a – b}{b – c} \) is equal to:
26)If \( A = \{1, 2, 3, 4, 5\} \) and \( B = \{1, 3, 5, 7\} \), then \( n(A \cap B) = \dots \):
27)The zeroes of the quadratic polynomial \( x^2 + x – 2 \) are:
28)Which of the following statement regarding the probability of an event is correct?
29)What is the probability of getting a number 7 in a single throw of a dice?
30)If one card is selected from a well-shuffled deck of 52 cards, then the probability of getting an ace card is:
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