Home » Ask & Discuss » Mathematics
« Back to Discussion

Algebra

New kid on the Block

Joined:	16 Aug 2011
Post:	7

10 Dec 2011 15:34:23 IST

0 People liked this

541

Find the 10th term of the given sequence, 5/34, 5/32, 5/30,...............

Engineering Entrance , JEE Main , JEE Advanced , Mathematics , Algebra

Find the 10th term of the given sequence, 5/34, 5/32, 5/30,...............

Comments (6)

Anshul Goswami

New kid on the Block

Joined: 28 Aug 2011

Posts: 7

10 Dec 2011 21:20:37 IST

Like 0 people liked this

take 5 common5(1/34,1/32.........)now inside the bracket we see a HPtherefore answer is 5/26.waise 10 term hi toh nikalna tha likh deta wahan tak kya yaar.

santanu sinha

Cool goIITian

Joined: 19 Mar 2011

Posts: 74

10 Dec 2011 22:19:51 IST

Like 0 people liked this

5/16 :P

Debasatwa Sarma roy

New kid on the Block

Joined: 11 Dec 2011

Posts: 3

11 Dec 2011 15:09:28 IST

Like 0 people liked this

ans=5/16

Pulkit Singhal

New kid on the Block

Joined: 21 Jul 2011

Posts: 22

11 Dec 2011 15:15:05 IST

Like 0 people liked this

5/16

Tejas Kulkarni

New kid on the Block

Joined: 16 Aug 2011

Posts: 7

13 Dec 2011 14:55:48 IST

Like 0 people liked this

Thanks boss..........

Yagyadutt Mishra

Forum Expert

Joined: 19 Feb 2009

Posts: 1979

13 Dec 2011 15:54:17 IST

Like 0 people liked this

As it is clear by looking at the sequesnce that there is now change in numerator ..only denominator is decreasing with a common difference of 2 ..

So the 10th term can be imagined as 5/n
Where n is some number which we have to find out..

Since the denominator is generating a sequence 34 32 30 ..... which is in AP with common difference of -2
So n (which is 10th term) = a + 9 d ( a is first term and d is common difference)
Hence ... n = 34 -9(2)
hence n = 16

So the 10th term comes out to be = 5/16

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team