Question

Find 14 th term of A,P 10,-5,-20

Answer 1

Answer:

-185

Step-by-step explanation:

formula,

$\boxed{\rm a_n =a+(n-1)d}$

we have,

• n=14
• a=10
• d= -5-10= -15

$\sf \underline{Solution:-}$

$\rm :\longmapsto a_n = 10 +(14-1)(-15)$

$\rm :\longmapsto 10 +(13)(-15)$

$\rm :\longmapsto 10 -195$

$\rm :\longmapsto -185$