self Maths Puzzle

Find out the wrong number in the series:
789,645,545,481,440,429,425
(a)645
(b)545
(c)481
(d)440
(e)425

Read Solution (Total 2)

440 is wrong....here 445 no. is right
10 years agoHelpfull: Yes(2) No(0)

440,diff z squares
10 years agoHelpfull: Yes(0) No(0)

self Other Question

two vessels contain spirit and water mixed respectively in the ratio of 1:3 and 3:5 . find the ratio in which these are to be mixed to get a new mixture in which the ratio of spirit to water is 1:2. in how many ways can 7 different objects can be distributed among 3 persons such that there should be atleast one person with exactly one object.