Table of Contents
- 1 What is the sum of all three digit numbers divisible by 5?
- 2 How many three digit natural numbers which are divisible by 5?
- 3 How many 3 digit numbers divisible by 5 can be formed using any of the digits from 0 to 9?
- 4 What is the sum of all three digit numbers divisible by 12?
- 5 How many three digit numbers are there divisible by 3 find their sum?
- 6 Which of the following number is divisible by 5 *?
- 7 How many 3 digit numbers divisible by 3 may be formed out of the digits 2 3 4 and 6 if the digits are not be repeated?
- 8 How many 3 digit numbers can be formed from the digits 2 3 5 6 and 7 which are divisible by 5 and in which none of the digit is repeated?
What is the sum of all three digit numbers divisible by 5?
So, sum of all the digits =(1802)[100+995]=98550.
How many three digit natural numbers which are divisible by 5?
The least positive three digit natural number divisible by 5 is 100. The sequence divisible by 5 is 100, 105, 110.. , 995. Hence, 180 three digit natural numbers are divisible by 5.
What is the sum of numbers divisible by 5?
Need to find out the numbers which are divisible by 5. Hence, the sum of integers which are divisible by 5 from 1 to 100 is 1050.
How many 3 digit numbers divisible by 5 can be formed using any of the digits from 0 to 9?
Hence any of 8 digits (1,2,3,4,6,7,8,9) can be placed at hundreds place….Permutation and Combination #57.
| 57. How many three digit numbers divisible by 5 can be formed using any of the digits from 0 to 9 such that none of the digits can be repeated? | |
|---|---|
| A. 136 | B. 124 |
| C. 112 | D. 108 |
What is the sum of all three digit numbers divisible by 12?
Answer: 108,120,132,…… 996.
What is the sum of all 3 digit number which is divisible by 7?
So, number of 3 digit numbers divisible by 7 is 128. Substitute a = 105, d = 7, l = 994 and n = 128. So, the sum of all 3 digit numbers divisible by 7 is 70336.
How many three digit numbers are there divisible by 3 find their sum?
R D Sharma – Mathematics 9 The Sum of three digits Number Divisible By 3 is 1251.
Which of the following number is divisible by 5 *?
Answer: A number is divisible by 5 if the number’s last digit is either 0 or 5. Divisibility by 5 – examples: The numbers 105, 275, 315, 420, 945, 760 can be divided by 5 evenly. The numbers 151, 246, 879, 1404 are not evenly divisible by 5.
Which of the following numbers is divisible by 5?
A number is divisible by 5 if its units place is 0 or 5. Consider the following numbers which are divisible by 5, using the test of divisibility by 5: 50, 75, 90, 165, 120. In 50, the unit’s place digit is 0. Hence, 50 is divisible by 5.
How many 3 digit numbers divisible by 3 may be formed out of the digits 2 3 4 and 6 if the digits are not be repeated?
So, (4 + 4 + 4 + 4 + 6 + 6 + 6 + 6) = 40 three-digit numbers divisible by 3 can be formed by digits 0, 1, 2, 3, 4 and 5 without repetition. To divide by 6 is must divide by 2, so ends in a 0, 2 or 4. And to divide by 3 the sum of digits must divide by 3.
How many 3 digit numbers can be formed from the digits 2 3 5 6 and 7 which are divisible by 5 and in which none of the digit is repeated?
As you can see we have only 5 present here, put it in units place. Now you have 5 digits – 2, 3, 6, 7, 9 remaining. So you can select 5 digits for tens place and as repeatation is not allowed, for hundreds place you can select remaining 4 digits. So final answer is 4 * 5 * 1 = 20 numbers can be formed.