general Maths Puzzle

405 135 54 29 18 18 9

Explain why

Read Solution (Total 5)

Is the given data correct ?

specially 29 ..
12 years agoHelpfull: Yes(2) No(1)

29 is odd as all other numbers are multiple of 9.
29 is prime number.
12 years agoHelpfull: Yes(2) No(0)
29 only ODD man

I asked about odd man out only Mr.Pargat
12 years agoHelpfull: Yes(1) No(2)
Ans. 29

Explanation:
All other numbers have sum of digits as 9 while number 29 has sum of digits as 11.
12 years agoHelpfull: Yes(1) No(0)
Its 27 not 29

Asked in CET '09
8 years agoHelpfull: Yes(0) No(0)

general Other Question

Jamil can fill a pool carrying buckets of water in 36 minutes. Sue can do
the same job in 65 minutes. Tony can do the same job in 1 and half hours. How
quickly can all three fill the pool together? Find a(1) in a geometric series for which S(n) = 189, r = 1/2, and a(n) =3.