how many numbers between 20 and 30 have 4 factors
how many numbers between 20 and 30 have 4 factors
9 numbers,it is 11,12,13,14,15,16,17,18,19
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Question 1:
J is a factor and a multiple of 25. What is J?
Answer: J =
Question 2:
How many prime numbers are less than 10?
Answer: There are
numbers.
Question 3:
Which of following numbers is composite?
Answer:
.
Question 4:
P is a prime number and a factor of 8. What is P?
Answer: P =
Question 5:
Find the sum of all the factors of 15
Answer:
Question 6:
In the following figure, AN = 5cm and AB = 8cm. NB =
cm
Question 7:
A prime number between 42 and 46 is
Question 8:
Find the sum of all the factors of 19
Answer:
Question 9:
How many prime numbers have formed ?
Answer: There are
numbers
Question 10:
How many multiples of 3 less than 1000?
Answer:
how many even numbers between 1 and 20 are there ?
There are 20 number.
The number of the sequence is : (20-1):(2-1)+1=20(number)
how many numbers between 100 and 500 have the sum of their digits equal to 5
There are 21 numbers between 100 and 500 have the sum of their digits equal to 5
The ratio between the numbers of books a sister and a brother had was 3:10 . The brother bought 52 books, then the ratio between the numbers of books the sister and the brother have becomes 2 :11. How many books does the brother have now?
how many decimal numbers are these between 17 and 18 such that have one digit in fraction part ?
How many 5-digit numbers contain all the digits 1, 2, 3, 4 and 5 and have the property that the difference between each pair of adjacent digits is at least 2?
the number 42 has the property that it is divisible by the digit in the ones place, because 42 divisible by 2. how many number between 20 and 40 have this property?
answer: ... numbers
9
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the sum of the digits of the numbers 2015 is 8 how many numbers between 100 and 1000 also have 8 as the sum of their digits
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