Next number in series 1, 1, 2, 6, 24, ?
Correct answer is: B. 120
The series follows n! (factorial): 1=1!, 1=1!, 2=2!, 6=3!, 24=4!, so 120=5!.
PPSC Zilladar Past Papers
PPSC Zilladar Past Papers PDF . here are ppsc past paper / 5 year past papers for the post of Zilladar
Odd number in series 19, 26, 33, 40, 47, 53:
Correct answer is: D. 53
The series increases by 7, but 53 disrupts the pattern (expected 54), making it odd.
Sum of two values of n if |n – 2| = 10:
Correct answer is: B. 4
|n - 2| = 10 gives n = 12 or n = -8. Sum = 12 + (-8) = 4.
Breadth of tank if length = 2.5m, depth = 10m, volume = 50,000L:
Correct answer is: B. 2 m
Volume = 50,000L = 50 m³. Length × Breadth × Depth = 2.5 × B × 10 = 50, so B = 2 m.
Which substance is used as a foaming agent in fire extinguisher?
Correct answer is: C. Aluminium hydroxide
Used to create foam for suppressing fire, especially in Class B fires.
A refrigerator works on the principle of:
Correct answer is: A. Thermodynamics
Refrigerators use thermodynamic cycles to transfer heat and cool the inside.
Which air gas is the main cause of increased temperature (global warming)?
Correct answer is: B. Carbon Dioxide
CO? traps heat in the atmosphere and is the primary greenhouse gas.
Free oxygen is available on which planet?
Correct answer is: B. Earth
Only Earth has breathable oxygen in the atmosphere.
Insulin is secreted by:
Correct answer is: D. Pancreas
The pancreas produces insulin to regulate blood glucose levels.