Table of Contents
- 1 What is the general form of 3 digit number ABC?
- 2 How many 3 digit numbers are there in ABC?
- 3 What three digit number is equal to the sum of the factorials of its digits?
- 4 What is generalized form ABC?
- 5 How many 3 digit numbers ABC Are there such that the sum of the first and last digits is 11?
- 6 What is place value and digit value?
What is the general form of 3 digit number ABC?
Numbers can be written in general form. For example, a two digit number ab is written as ab = 10a + b; a three digit number abc is written as abc = 100a + 10b + c.
How many 3 digit numbers are there in ABC?
Third digit can be filled with remaining 8 digits. Hence the number of three digit numbers formed such that at least 2 of its digits are same are 252.
What are the place values in a 3 digit number?
Decomposing a 3-digit number: In a three-digit number, there are three place values used – hundred’s, ten’s, and units.
What three digit number is equal to the sum of the factorials of its digits?
Thus, 145 is the only solution. Of these, only 145 works.
What is generalized form ABC?
Answer: Numbers can be written in general form. For example, a two digit number ab is written as ab = 10a + b; a three digit number abc is written as abc = 100a + 10b + c. The general form of numbers are helpful in solving various problems related to numbers.
How many numbers are in ABC?
26 letters
The English Alphabet consists of 26 letters: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z….Letters in the alphabet:
Letter Number | Letter |
---|---|
25 | Y |
26 | Z |
How many 3 digit numbers ABC Are there such that the sum of the first and last digits is 11?
These numbers have a digit sum of 11. There are 61 numbers.
What is place value and digit value?
Place value is the value of each digit in a number. For example, the 5 in 350 represents 5 tens, or 50; however, the 5 in 5,006 represents 5 thousands, or 5,000. It is important that children understand that whilst a digit can be the same, its value depends on where it is in the number.
How many numbers have the sum of their factor equal to the number itself?
Every number is a factor of itself. 1 is a factor of every number. A number for which sum of all its factors is equal to twice the number is called a perfect number.