Count to 100. How many of those numbers are odd or multiples of 5? Since 50 are odd and 20 are multiples of 5, at first glance the answer is 70... See more
How many students failed both subjects?
In a higher secondary examination 80% of the examinees have passed in English and 85% in Mathematics, while 75% passed in both English and Mathematics. If 45 candidates failed in both the subjects, find the total number of candidates.
Find the sum of all natural numbers from 1 through 1000 which are neither divisible by 5 nor by 2.
\(175\) people can speak German,
\(150\) people can speak French,
\(180\) people can speak English,
\(160\) people can speak Japanese.
What is the minimum number of foreigners that can speak all the four languages?