Question

What is the common difference of the arithmetic progression 10, 5, 0, -5?

• A. 5
• B. 0
• C. -5
• D. 15

Answer 1

The correct option is C

-5

Given,

first term $a_1$ = 10

second term $a_2$ = 5

third term $a_3$ = 0

$a_2$ - $a_1$ = 5 - 10 = -5

$a_3$ - $a_2$ = 0 - 5 = -5

$\therefore$ Common difference (d) = -5