Question

the first term of an A.P is 2 and the nth term is 41. what is the value of n, if sn=860?​

Answer 1

Answer:

sorry I don't know

Step-by-step explanation:

Surface Tension: "The property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules." It seems to defy the laws of physics, but a paper clip made of steel can indeed float on the water surface.

Answer 2

Answer:

40

Step-by-step explanation:

a=2

Tn= 2+(n-1)d

(n-1)d = 39

Sn= n/2(2a+(n-2)d)

860= n/2(2×2+39)

860×2= n(43)

43n=1720

n=1720/43

n= 40

Hope it was helpful