[PPSC Scientific Assistant (Chemistry) 2023]

26.Find the value of “?” in the following:

[PPSC Scientific Assistant (Chemistry) 2023]

27. Use the relations defined below to solve the question that follows:
S * T means S is the sister of T. S + T means S is the brother of T. S - T means S is the son of T. S / T means S is the daughter of T. S = T means S is the father of T. S x T means S is the mother of T.

Which of the following means A is the uncle of B?

[PPSC Scientific Assistant (Chemistry) 2023]

28. Ms. Navya likes to let her students choose who their partners will be for study during the course; however, no pair of students may work together more than seven class periods in a row. Ankit and Benny have studied together seven class periods in a row. Catherine and Danny have worked together three class periods in a row. Catherine does not want to work with Ankit. Who should be assigned to work with Benny?

[PPSC Scientific Assistant (Chemistry) 2023]

29.Three unbiased coins are tossed. What is the probability of getting atmost one head?

[PPSC Scientific Assistant (Chemistry) 2023]

30. In a clock, how fast second hand rotates than minute hand (in degrees per second)?