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How many odd numbers are between 20 and 100?
There are 40 odd numbers between 20 and 100. Remember that an odd number is every second number. There are 80 numbers between 20 and 100, so there are 40 odd numbers and 40 even numbers.
What is the sum of the first 20 odd numbers?
1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 27 + 29 + 31 + 33 + 35 + 37 + 39 = 400 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39 above are the first 20 odds If you add the first to the last you get 40 If you add the second to the second from last you get 40 It doesn't matter which numbers you add first so long as you add them all up there are 10 pairs of numbers totaling 40 so the sum is 400
What are the odd numbers between 40 and 50?
45
What is the answer when you add all numbers from 40 to 60?
The sum of the numbers 1 to 39 = 39 x 40 ÷ 2 = 780 The sum of the numbers 1 to 60 = 60 x 61 ÷ 2 = 1830 Therefore the sum of the numbers 40 to 60 = 1830 - 780 = 1050
The sum of three consecutive numbers is 123 what are the numbers?
The numbers are 40, 41 and 42.
What is the sum of the first 80 consecutive odd numbers?
40 * * * * * The correct answer is 6400.
How can I solve the 40 odd numbers?
1 ,3, 5, 7 ,9......, 77, 79. Sum of first 40 odd numbers is 1600. This is the answer
What is sum of first 40 numbers?
The sum of the first 40 whole numbers is 780.
What is the sum of the first 40 consecutive odd numbers?
The answer is 1600. All you have to do is times the number given into itself. Example first 50 odd numbers would be 50x 50= 2500.
What is the sum of the first 40 evn numbers?
The sum of the first 40 even numbers is 1,640.
How many odd numbers are in 40?
There are 20 odd numbers in 40.
What are three prime numbers that have the sum of 42?
Three prime numbers whose sum is 42 are 23, 17 and 2
What odd number is between 21 and 40 with a odd sum of 8?
There can be no number with an odd sum of 8 because 8 is not odd!
What are the odd numbers between 40 and 53?
The odd numbers between 40 and 53 are 41,43,45,47,49,51.
What are 3 consecutive numbers when the first and thirds sum is 40?
19,20,21
If two numbers are selected at random from the first five prime numbers What is the probability that their sum is an odd number?
There is a 40% chance that it will be an odd number. Explanation: The first five prime numbers are 2, 3, 5, 7, and 11. If one of the two numbers chosen is 2, the sum of the two numbers will be odd. 2 + 3 = 5 2 + 5 = 7 2 + 7 = 9 2 + 11= 13 But, if both numbers chosen are odd, the sum will be an even number. 3 + 5 = 8 3 + 7 = 10 3 + 11 = 14 5 + 7 = 12 5 + 11 = 16 7 + 11 = 18 So, there are four possible combinations out of 10 that result in a sum that is odd. Another way to do this, without listing the possible combinations, is to determine the chance of randomly selecting the 2. Two numbers are being chosen from five, so there is a 2/5 = 40% chance of selecting a 2, which means the sum will be odd.
How many odd numbers are between 20 and 100?
There are 40 odd numbers between 20 and 100. Remember that an odd number is every second number. There are 80 numbers between 20 and 100, so there are 40 odd numbers and 40 even numbers.
