Study guides

☆☆

Q: How many integers are there between 100 and 1000 all of whose digits are odd?

Write your answer...

Submit

Still have questions?

Related questions

There are 120 of them.

How many

The sum of all the integers between 1,000 and 2,000 is 1,498,500.

9*9*8*7 = 4536

717

648

952 of them.

An infinite amount

There are 2828 integers between 1000 and 9999.

999 are whole.

9000 integers.

52

405

1, 2, 4, 5, 8, and 10, so only 6 digits.

There are 30 such integers.

333 integers.

What is the units digit of the least whole number greater than 1000 whose digits are all different?

10*9*8=720

899

solution: we know that there are 25 prime numbers are between 1-100 and 168 prime numbers less than 1000. 100 x 100=10000(5 digits) 999 x 999=998001(6 digits) 1000 x 1000=1000000(7 digits) so our answer should be same as the number of prime numbers between 100 to 999. hence, 168-25=143. 143 prime numbers will be there less than 1000 whose square has 5 or 6 digits.

31.how do you solve?

There is only 1, the number 54.

There are 870 such numbers.

123

128!