Number Triangle Problems Quiz

What is the formula used to find the sum of consecutive integers?

• Sum = n^3

• Sum = n(n + 1)/2

• Sum = n^2

• Sum = n(n - 1)/2

How do you find the first number in the 100th row of a number triangle?

• By adding 100 to the last number of the 99th row

• By subtracting 1 from the last number of the 99th row

• By multiplying the last number of the 99th row by 2

• By adding 1 to the last number of the 99th row

In a number triangle where each row doubles in length, what is the first number in row 4?

• 2^3

• 2^4

• 2^2

• 2^5

How do you calculate the last number in row 10 of a number triangle where each row doubles in length?

• By dividing 2^10 by 2

• By multiplying 2^10 by 2

• By adding 1 to 2^10

• By subtracting 1 from 2^10

What is the last number in row 10 of a number triangle where each row doubles in length?

• 1023

• 1024

• 512

• 2048

In a number triangle where each row increases by two, what pattern do the numbers at the end of each row follow?

• They are cube numbers

• They are prime numbers

• They are square numbers

• They are Fibonacci numbers

How do you find the first number in row 1000 of a number triangle where each row increases by two?

• By multiplying 999 by 2

• By adding 1 to the square of 999

• By subtracting 1 from the square of 999

• By dividing 999 by 2

What is the last number in row 999 of a number triangle where each row increases by two?

• 999^2

• 999^3

• 999^4

• 999^5

What is the first number in row 1000 of a number triangle where each row increases by two?

• 998,200

• 998,199

• 998,201

• 998,202

What mathematical concept is used to find the last number in a row of a number triangle where each row increases by two?

• Difference of cubes

• Sum of squares

• Sum of cubes

• Difference of squares