Question

which of the following are AP if they form an AP find the first term and common diffrence. a) 2,4,8,16 b) 1,-1,-3,-5 c) - 10,-6,-2,2 d) - 2,2,-2,2,-2​

Answer 1

Answer:

option ( c ) is the right answer

the first term ,a= -10

the common diference , d = a2 - a1

= (-6 - (-10)

= -6 + 10

= 4