Correct Answer: Option D

Explanation

1st statement: U₆ = 1/2(U₁₂)
a + (n -1)d = 1/2[a + (n-1)d]
a + 5d = a + 11d
2(a + 5d) = a + 11d
2a + 10d = a + 11d

Solving, => a = d
Hence the first term is equal to the common difference

There is an explanation video available below.

• what does productivity of grass means and what are they? Answer this

  1 Answers   ·   Agricultural Science   ·   12 hours ago
• what are the recommend text in Economics? Answer this

  1 Answers   ·   Economics   ·   7 hours ago
• a compund microscope by lens of focal length 1cm and 5cm.an object placed 1.2cm from the objective lens if a... Answer this

  1 Answers   ·   Physics   ·   1 day ago