Maths Practice 2- Number System - ITO

Level 2 - Number System Quiz (Moderate)

1. What is the HCF of 36 and 48?

6 8 12 18

2. What is the LCM of 15 and 20?

30 60 90 120

3. Which of the following numbers is divisible by 11?

121 143 154 231

4. The smallest 4-digit number divisible by 9 is:

1008 1009 1017 1026

5. What is the unit digit of 7⁶⁵?

1 3 7 9

6. How many prime numbers are there between 10 and 30?

5 6 7 8

7. Which of the following is a perfect square?

441 243 225 Both a and c

8. The least number which when divided by 6, 9 and 12 leaves remainder 3 in each case is:

45 63 75 99

9. The sum of first 20 natural numbers is:

190 200 210 220

10. Which of the following fractions is in the lowest form?

12/20 15/25 18/27 16/21