Kameshwar
How many numbers from 11 to 50 are there which are exactly divisible by 7 but not by 3?
Five
Four
Six
Two
* * * * *
Good strategy! List all possible values and one of them must be correct! The correct answer is 4.
Wiki User
∙ 9y ago7, 14, 21, 28, 35, 42, 49, 56
There are nine numbers between 10 and 100 that are evenly divisible by 11.
11
All multiples of 605 are divisible by 605:605, 1210, 1815, 2420, 3025, ...The numbers that 605 is divisible by, ie the numbers that divide 605 exactly, are its factors which are: 1, 5, 11, 55, 121, 605
Just the one: 11 itself. If any other number were divisible by 11 that number would not be a prime.
12
9 of them.
7, 14, 21, 28, 35, 42, 49, 56
There are nine numbers between 10 and 100 that are evenly divisible by 11.
There are 6 numbers between 1 and 70 that are divisible by 11. These numbers are: 11; 22; 33; 44; 55; 66.
286 is divisible by 1, 2, 11, 13, 22, 26, 143 and 286. The numbers exactly divisible by x are called the factors of x.
11
8 of the numbers less than 660 are divisible by 5 and 11 but not 3. All numbers divisible by 5 and 11 are multiples of their lcm; lcm(5, 11) = 55 All numbers divisibile by 5, 11 and 3 are multiples of their lcm; lcm(5, 11, 3) = 165 659 ÷ 55 = 11 54/55 → 11 numbers less than 660 are divisible by 5 and 11 659 ÷ 165 = 3 164/165 → 3 numbers less than 660 are divisible by 5, 11 and 3 → of the 11 numbers less than 660 divisible by 5 and 11, 3 are also divisible by 3 → 11 - 3 = 8 numbers less than 660 are divisible by 5 and 11 but not 3,.
All multiples of 605 are divisible by 605:605, 1210, 1815, 2420, 3025, ...The numbers that 605 is divisible by, ie the numbers that divide 605 exactly, are its factors which are: 1, 5, 11, 55, 121, 605
There are 90 such numbers.
Just the one: 11 itself. If any other number were divisible by 11 that number would not be a prime.
90.