mathematics

[niyati790]

a salesman visits 274 houses in a town to find out their views about three products A,B, &C.he finds that 157 use A 98 use only A,22 use all three 14 use A & C but not B, 36 use B & C, 48 use only B. how many use onlyC?How many use at least two products?

[joker]

knowing that 157 use A, you can work out that 23 use A&B, and by taking away the remainder, leaves you with 69 using C. So.... 69 use C and 95 use at least two products