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ssredhu
July 28th, 2003, 03:57 PM
Here is another one for the grey cells. Enjoy!!!!

Which no. completes the puzzle?
63, 23, 82, 42, 02, 61, ??

Answers with reasoning......

uday
July 28th, 2003, 05:47 PM
62 + 19 = 82
23 + 19 = 42
82 + 19 = 101 =1+1 =02
42 + 19 = 61
02 + 19 = 21
61 + 19 = 80


Answer is 21 , 80.. and so on


Sewa Singh Redhu (Jul 28, 2003 06:27 a.m.):
Here is another one for the grey cells. Enjoy!!!!

Which no. completes the puzzle?
63, 23, 82, 42, 02, 61, ??

Answers with reasoning......

uday
July 28th, 2003, 06:06 PM
63-> 6+3 = 9 ( seq (A). start from 9)
23->2+3 = 5 ( seq(B) start from 5 )
82-> 8+2 = 10 ( seq. A GROWS BY 1 and is 10 )
42-> 4+2 = 6 (seq. B GROWS BY 1 and is 6)
02-> 0+2= 2 (seq. A GROWS BY 1, 2 is 1+1 )
61-> 6+1= 7 (seq. B GROWS BY 1 and is 7 )
21-> 2+1 =3 ; after adding 19 in 02 (seq. A GROWS BY 1 and is 2+1 = 1+2 =3
80-> 8+0= 8 ; after adding 19 in 61 (seq. B GROWS BY 1 and is 8 )
40-> 4+0 =4 ; after adding 19 in 21 (seq. A GROWS BY 1 and is 4 )
99-> 9+9=18=1+8 =9; after adding 19 in 80 (seq. B GROWS BY 1 and is 8 )
59-> 5 +9=14=1+4=5 ; after adding 19 in 40 (seq. A GROWS BY 1 and is 5)

so if you sum each no. generated seq is ..

9,5,10,6,02,7,3,8,4,9,5,10,6,2,7,3
( check this seq. alternate no's.. )

ssredhu
July 29th, 2003, 06:23 AM
Uday Bhai,

Iska bada hee simple answer hai. Phir se socho.

uday
July 29th, 2003, 12:36 PM
One more way to solve it..

Answer could be 02 OR 21

Your seq. is
63, 23, 82, 42, 02, 61, ??

The difference between
63 & 23 - 40
23 & 82 - 59
82 & 42 - 40
42 & 2 - 40
2 & 61 - 59
hence next difference should be 59
61 & 2 - 59

Answer Seq. is 40,59,40,40,59,59

and there are still more ways to solve it...

ssredhu
July 29th, 2003, 05:39 PM
Nice tries.

Well said there are many more ways to solve it. I am still looking for a simpler solution.

uday
July 29th, 2003, 08:06 PM
63, 23, 82, 42, 02, 61, ??

63 82 02 ?
6- -- 8- -- 0- -- 2 (6,8,10,12..so on)

63 23 82 42 02 61 ?
-3 -3 -2 -2 -2 -1 -1 ( seq. two times 3, three times 2 and three times 1)

answer is 21..... and all these Answers are correct.

ssredhu
July 30th, 2003, 09:20 AM
Uday Bhai,

Ur answer is totally correct. It's 21. Simpler logic in my opinion is - They are all multiples of 4, written in the opposite order, starting fm 9. Like 4X9 = 36 written as 63, 4X8 = 32 written as 23, 4X7 = 28 written as 82........... Like wise the no. in the sequence is 4X3 = 12 to be written as 21.

uday
July 30th, 2003, 11:40 AM
Dear Sewa,
answer 02 is also correct... see my third sol. where symmetry goes like...
40,59,40,40,59,59




Sewa Singh Redhu (Jul 29, 2003 11:50 p.m.):
Uday Bhai,

Ur answer is totally correct. It's 21. Simpler logic in my opinion is - They are all multiples of 4, written in the opposite order, starting fm 9. Like 4X9 = 36 written as 63, 4X8 = 32 written as 23, 4X7 = 28 written as 82........... Like wise the no. in the sequence is 4X3 = 12 to be written as 21.

shekhar_nehra
July 31st, 2003, 12:49 AM
Bahut Badhiya,
Sewa ji and Uday bhai.

Good job.