Question

Find the 10th term of an A.P 5,1,-3,-7
A)+31 B)-31 C) -10. D)10​

Answer 1

Step-by-step explanation:

A10=a+9d

A10=5+9*-4

A10=5-36

A10=-31

Answer 2

Answer:

B) -31

Step-by-step explanation:

first term = 5

common difference = 1 - 5 = -4

nth term = 10

then,

an = a + ( n -1) d

an = 5 + (10 - 1 ) (-4)

an = 5 + 9 (-4)

an = 5 - 36

an = -31