1) A secret diary is secured with a 3-digit combination.
The first digit is the only even prime number.
The second digit is the square of the first digit.
The third digit is the number of sides of a triangle.
What is the combination to the secret diary?

2) The Roman numeral ‘CM’ stands for which decimal number?

3) How many whole numbers less than 50 are multiples of both 2 and 5?

4) Which of the following is a possible roman number?

5) Which option represents the highest value in Roman numerals?

6) What is the predecessor of the successor of 15 – 23 + 8?

7) The number of even numbers between 60 and 80 is

8) Estimate the product of 298 × 51 by rounding both numbers to the nearest ten.

9) Convert the Roman numeral ‘DCCXCVII’ to a decimal number.

10) A submarine is at 120 m below sea level.
It rises 75 m, then sinks 40 m.
Where is it now?

11) What is the difference in the place value of 7 in the largest and the smallest 4-digit number formed by the digits 2, 7, 0, 4?

12) There are XXX water bottles.
Each bottle is filled with V litre of water.
If II litres are poured out from each bottle, how much water is left in total?

13) What is the smallest whole number that must be added to 361 to make it divisible by 2?

14) What is the Roman numeral for 49?

15) Consider the digits 9, 6, 3, and 1.
Form the largest possible four-digit number.
Let’s call this number M.
Form the smallest possible four-digit number.
Let’s call this number N.
Now, calculate the following:
(Place Value of 6 in M) – (Face Value of 1 in N) + (Place Value of 3 in M)

16) What is the distance between the points marked at -8 and -1 on the number line?

17) The number of perfect squares between 1 and 100 (exclusive of 1 and 100) is

18) Which of the statements in the options is incorrect?

19) What is the correct Roman numeral for the decimal number 3999?

20) In the number 406, what is the value of the digit 4?