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How many numbers between 100 and 1000 have two as the units digit?
90 of them.
How many composite numbers up to 100 have 1 in their units digit?
There are four of them.
How many two digit prime numbers are there between 1-100 such that they have digit 7 in their units place?
There are 5 of them.
How many prime numbers up to 100 have the number 9 as their units digit?
19 29 59 79 89 Five of them.
How many times does the digit 1 occur in tens place in the numbers from 100 to 1000?
That looks like it should be the same as 10 times (the number of times the digit 1 occursin the units place in the numbers from 10 to 100), which would work out to 90 .
How many 3 digit numbers have only even numbers?
100
What are the composite numbers less than 100 whose units digit is 3?
33, 63 and 93
How many times does the digit 9 occur between 100 and 1000?
The digit 9 occurs 271 times between 100 and 1000. It appears in three places: the hundreds, the tens, and the units. In the hundreds place, 9 only appears in the numbers from 900 to 999, contributing 100 occurrences. In the tens and units places, each contributes 90 occurrences (from 190-199 and 90 numbers in the units place across each hundred), resulting in a total of 271 appearances of the digit 9.
What is the units digit of the product when one hundred 7's are multiplied?
When multiplying numbers with the same units digit, the units digit of the product is determined by the units digit of the base number raised to the power of the number of times it is being multiplied. In this case, since 7 is being multiplied 100 times, the units digit of the product will be the same as the units digit of 7^100. The units digit of 7^100 can be found by looking for a pattern in the units digits of powers of 7: 7^1 = 7, 7^2 = 49, 7^3 = 343, 7^4 = 2401, and so on. The pattern repeats every 4 powers, so the units digit of 7^100 will be the same as 7^4, which is 1. Therefore, the units digit of the product when one hundred 7's are multiplied is 1.
How many 3 digit numbers are under 500?
The 3 digit numbers under 500 are 100 through 499.
100 to 999 how many three digit numbers?
900
How many 3-digit numbers are there in all?
100 to 900
