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How many 5-digit numbers have digits whose product is equal to 4?
There are 15 of them.
How many 5 digit numbers are divisible by 150?
There are 600 5-digit numbers divisible by 150.
What one-digit number is the product of two consecutive prime numbers?
There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)
Find 5 four digit numbers such that the product of the digits of each four digit prime number are also prime?
You had me until "product." The product of 4 digits can't be prime.
When you multiply 5 the ones digit in the product is one of these two numbers Name the numbers Explain how you know?
15
How many 5-digit numbers have digits whose product is equal to 4?
There are 15 of them.
How many 5 digit numbers are divisible by 150?
There are 600 5-digit numbers divisible by 150.
What one-digit number is the product of two consecutive prime numbers?
There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)
What is the last digit in the product of the first 20 odd natural numbers?
5.
How many two-digit numbers has a digit sum equal to 5?
There are five such numbers.
How many 5 digit numbers are even?
With a total of 90,000 five digit numbers, we can conclude that there is 45,000 EVEN five digit numbers.
How many 5 digit numbers are there?
There are 9000 of them.
Find 5 four digit numbers such that the product of the digits of each four digit prime number are also prime?
You had me until "product." The product of 4 digits can't be prime.
When you multiply 5 the ones digit in the product is one of these two numbers Name the numbers Explain how you know?
15
How many 3-d How many 3-digit numbers will be there which are divisible by 19igit numbers with atleast one 5 in their digits?
None. 3 digit numbers are not divisible by 19 digit numbers.
How many 5 digits are there?
There are 90000 5-digit numbers.
How many 3-digit numbers are there using 2 4 6 8 and 9?
There are 5 numbers which can make the 3 digit numbers in this example. Therefore each digit in the 3 digit number has 5 choices of which number can be placed there. Therefore number of 3 digit numbers = 5 x 5 x 5 = 125
