Question
How many figures (digits) are required to number a book containing 250 pages?
Alternate Method: Remember that digits used to write 1 to 100 = 192 digits & from 101 to 250, there are 150 numbers & all are of 3 digits hence 450 digits are used. Hence total digits required to write 1 to 250 = 192 + 450 = 642 digits More No. System Questions
- The ratio of present boys to girls is 3:2. 10 girls are absent, which is 20% of the class. No boys are absent. Find the number of boys.
- The average of five consecutive numbers is 23. Find the middle number.
- Find the smallest natural number which when divided by ‘4’, ‘6’ and ‘15’, leaves a remainder ‘3’ in each case.
- After swapping its digits, a two-digit number becomes 17 less than 200% of the original number. The sum of the digits is 8. Find the original number.
- Question 5
- Find the value of 98 × 102 without doing the full multiplication directly.
- The divisor is 50% of the quotient and 7 times the remainder. If the remainder is 2, then what is the dividend?
- What quantity must be subtracted from (11/16) to get (3/8)?
- Find the maximum value of (x + y) if 7x52y4 is divisible by 12.
- A three-digit number is such that the sum of its digits is 12 and when its digits are reversed, the new number is 198 more than the original number. Find t...
Relevant for Exams:
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
