1. How many times does the digit 7 appears when writing all the numbers from 1-100?

2. The largest 4 – digit number, using any one digit twice, from digits 5,9,2 and 6 is

3. What is the Kaprekar constant for 4- digit numbers?

4. Which of the following numbers is a supercell in the grid [ 45, 78, 92, 31, 60]?

5. What is the correct order of placing the numbers 2180, 9950, 3050 on a number line?

6. What is the sum of the smallest two – digit number and the largest one-digit number?

7. In the number line pattern, if you are moving from 5 to 15 and then from 15 to 25, what will be the number after moving from 25 with the same pattern?

8. Which of the following clock timing forms a palindrome?

9. Total number of 4 digits number are 900?

10. The difference between 8000 and 2345 is ______________.