Question

S17=24. S24=17. S41=?​

Answer 1

$\boxed{\bf{\blue{\bigstar Answer:}}}$

• ${\bf{\implies S_17=24}}$
• ${\bf{\implies 24= \frac {17}{2}\times 2a+(n-1)d}}$
• ${\bf{\implies \frac {24}{17}= a+16d--(1)}}$
• ${\bf{\implies 17=(\frac {24}{2})\times 2a+(n-1)d}}$
• ${\bf{\implies (\frac{17}{12})= 2a+23d--(2)}}$
• Multiply eq (1) by 2 and Subtract
• We get 9d = 317/204
• D = 317/1836
• A = 0.02
• S41 = 41/2(0) = 0