Practice PPSC questions with answers and explanations.
Choose an option to check your answer.
The cube root is the number that gives 729 when cubed.
Since 9³ = 729, the answer is 9.
Choose an option to check your answer.
The sequence increases by 3 each time.
Adding 3 to 11 gives 14.
Choose an option to check your answer.
The sum of the first n natural numbers is n(n + 1)/2.
For n = 10, the sum is 10 × 11 ÷ 2 = 55.
Choose an option to check your answer.
The sum of the first n odd numbers equals n².
For n = 8, the sum is 8² = 64.
Choose an option to check your answer.
The least common multiple of 3 and 4 is 12.
A number divisible by both must therefore be divisible by 12.
Choose an option to check your answer.
The units digits of powers of 7 cycle as 7, 9, 3, 1.
The fourth power therefore ends in 1.
Choose an option to check your answer.
Division and multiplication have equal priority and are performed left to right.
So 48 ÷ 6 = 8, and 8 × 3 = 24.
Choose an option to check your answer.
The greatest common divisor of 18 and 24 is 6.
Dividing both terms by 6 gives 3/4.
Choose an option to check your answer.
Multiplication is performed before addition.
Thus, 3 × 4 = 12 and 5 + 12 = 17.
Choose an option to check your answer.
Convert 2/3 to sixths: 2/3 = 4/6.
Then 4/6 + 1/6 = 5/6.
Choose an option to check your answer.
The operation inside parentheses is completed first.
Then 12 ÷ 3 = 4.
Choose an option to check your answer.
Convert 1/4 to 2/8.
Then 7/8 - 2/8 = 5/8.
