self Exam Numerical Ability Number System

The number of positive integers which are less than or equal to 1000 and are divisible by none of 17, 19 and 23 equals
Option
(A) 854
(B) 153
(C) 160
(D) None of the above.

Read Solution (Total 2)

self Other Question
A bridge has to be crossed. only 2 persons can cross it at a time because only 1 torch is available which is necessary to cross it. there are 4 peoply named acc. to the time they take to cross i..e 1,2,5 and 10 (they take the time in sec).what minimum time will they take to cross the bridge ?? The value of the in nite product
P =
7
9

26
28

63
65
    
n^3 - 1
n^3 + 1
   is
Option
(A) 1
(B) 2/3
(C) 7/3
(D) None of the above.