Book Maths Puzzle Numerical Ability

between June 1990 and February 1993,how many months have 31 days?

Read Solution (Total 2)

19 months
every year 7 months have 31 days
9 years agoHelpfull: Yes(0) No(0)

june 90----4
91-----7
92-----7
feb 93---1
total---19
9 years agoHelpfull: Yes(0) No(0)

Book Other Question

The average of 12 results is 15, and the average of the first two is 14. what is the average of the rest?

(a) 14 1/5 (b)15 (c) 15 1/5 (d) 14 in a class two students aged 16yrs and 18 yrs are replaced by two students whose age is 19yrs and 21 yrs.if the avearge age of the cls os increased by 3 months.?How many students are there in the class?