11SN

The sets M and N intersect such that n(M)=31, n(N)=18 and n(M ∪ N)=35. How many elements are in both P and Q?

Of the 32 students in a class, 18 play golf, 16 play the piano and 7 play both. How many play neither?

Of the 53 staff at a school, 36 drink tea, 19 drink coffee and 10 drink neither tea nor coffee. How mnay drink both tea and coffee?

Unlock this slideshow and over 4 million more with Baamboozle+