# (6, 15)

A = 6

B = 15

 Sum 21 Difference 9 A × B 90 A ÷ B 0.4 B ÷ A 2.5 GCD 3 LCM 30 Average 10.5

## Combination

5005

${}_{ 15 } C_{ 6 } = 5005$

## Sum of squares

261

$6^2 + 15^2 = 261$

## Norm

$\sqrt{ 6^2 + 15^2 } = 16.15549442140351$

## Geometric mean

9.486832980505138

No

## Stirling number of the first kind

0

$S(6,\ 15) = 0$

## Stirling number of the second kind

0

$S(6,\ 15) = 0$

## Jacobi symbol

0

$\left(\dfrac{ 6 }{ 15 }\right) = 0$

## Properties of 6 and 15

Properties of 6 and 15: The GCD and LCM of 6 and 15 are 3 and 30 respectively. 6 + 15 = 21, |6 - 15| = 9, 6 * 15 = 90, 6 / 15 = 0.4, 15 / 6 = 2.5. The average of 6 and 15 is 10.5 and the norm of them is 16.15549442140351. The geometric mean of two numbers is 9.486832980505138.