Natural numbers + addition - practice problems - page 10 of 12
Number of problems found: 231
- Arithmetic 81811
In which arithmetic sequence is the sum of the first five terms with odd indices equal to 85 and the sum of the first five terms with even indices equal to 100? - Numbers 24281
Of the four numbers, the second is five larger than the first, the third two smaller than the first, and the fourth is twice larger than the first. Find these numbers if their sum is 38. - Consecutive 4122
The sum of four consecutive natural numbers is 90. Determine these numbers. - Fraction
Fraction frac(0, overline(38))(0,38) write as fraction a/b, a, b is integers numerator/denominator.
- Determine 82975
Determine the sum of all positive odd numbers less than 78 - Recurrence relation
Consider a recurrence relation an = 3an-1 - 3an-2 for n = 1,2,3,4,… with initial conditions a1 = 4 and a2 = 2. Calculate a5. - Algebrogram
Solve cryptarithmetic (alphametics) for a sum of three numbers: BEK KEMR SOMR ________ HERCI - Sum of AP members
Find the sum of all the numbers between 8 and 258 that are divisible by 5. - Determine 2937
Determine the first 14 members of the sequence if a15 = 225, d = -12
- Cryptogram 73784
Solve the cryptogram (equation with letters, where the letter is one digit) Fot Bal ---- Cvik - Calculate 8259
Calculate the sum of all 4-digit odd natural numbers. - Sum of odd numbers
Find the sum of all odd integers from 13 to 781. - Calculate
Calculate the sum of all three-digit natural numbers divisible by five. - Sum 1-6
Find the sum of the geometric progression 3, 15, 75,… to six terms.
- Multiples of eight
Find the sum of the first 25 multiples of 8. - Mathematicians 11761
The top five mathematicians in the class took on the teacher's help calculating the paper's average grade. They dictated the following results: Mischa: "I came up with 3.30. " Dasha: "That's weird because it worked out precisely 3.45. " Jana: "You probabl - Classmates 68744
Three classmates shared 710 balls, so the second got 20% more than the first and the third 35% more than the first. How many balls did the third of them get? - Different 9711
A new bus route network was built. There are three stops on each line. In addition, every two lines either do not have a common stop or have only one common stop. What is the largest number of tracks there can be in a town if we know there are only nine d - Z9–I–4 MO 2017
Numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9 were prepared for a train journey with three wagons. They wanted to sit out so that three numbers were seated in each carriage and the largest of the three was equal to the sum of the remaining two. The conductor said
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