CAT Exam Numerical Ability Clocks and Calendars

Without counting Saturdays and Sundays, my grandfather said he was 84 years old. How old my grandfather really was?

Read Solution (Total 2)

I think nearly 108 years,

I itself don't know the answer. Thats why i post the answer here.
12 years agoHelpfull: Yes(2) No(2)

Ans. 70 years

Without counting Saturday and Sunday, a week has 5 days instead of 7 days.
So age of grandfather is 84 years considering 5 days in a week.
On considering 7 days in a week real age of grandfather = 84*5/7 = 70 years.
12 years agoHelpfull: Yes(2) No(11)

CAT Other Question

If n is an odd integer then the last two digits in base ten of 2^2n * (2^(2n+1) -1) are
I. 18 II. 28 c. 38

a. Only I
b. Only I & II
c. Only II
d. Only I, II & III
e. None of the above Let the number of white vessels needed be n! for the emptying process described above, if the
volume of each white vessel is 2litres. Among the following values, which is the least upper
bound on n! ?
(1) m/4
(2) smallest integer greater than or equal to n/2
(3) n
(4) Greatest integer less than or equal to 1/4