3181: Among the following which planet takes maximum time for one revolution around the Sun?
(a) Earth
(b) Jupiter
(c) Mars
(d) Venus
3182: Which of the following is a living fossil?
(a) Blue green algae
(b) Green algae
(c) Fungus
(d) Ginkgo
3183: Three Dice (each having six faces with each face having one number from 1 to 6) are rolled. What is the number of possible outcomes such that at least one dice shows the number 2 ?
(A) 36
(B) 81
(C) 91
(D) 116
3184: In a carrom board game competition, m boys and n girls(m > n > 1) of a school participate in which every student has to play exactly one game with every other student. Out of the total games played; it was found that in 221 games one player was a boy and the other player was a girl.
Consider the following statements:
1. The total number of students that participated in the competition is 30.
2. The number of games in which both players were girls is 78.
Which of the statements given above is/are correct?
(A) 1 only
(B) 2 only
(C) Both 1 and 2
(D) Neither 1 nor 2
3185: The main constituents of pearl are
(a) calcium carbonate and magnesium carbonate
(b) aragonite and conchiolin
(c) ammonium sulphate and sodium carbonate
(d) calcium oxide and ammonium chloride