In the following questions are to be based on the details given below:
A salesman visits 274 houses in a town to fmd out the views about three products X, Y and Z. He found that 157 use X, 98 use only X, 22 use all the three, 14 use X and Z but not Y, 39 use Y and Z., 48 use only Y
Which product is the most popular one?
How many use product Z only?
What fraction used at least two products?
For the following questions answer them individually
If A means '$$+$$', @ means '$$\times$$', & means '$$\div$$' and V means '$$-$$', then the value of
7 @ 2 V 135 & 5 @ 3 & 9 A 1
A shop keeper purchased 10 boxes of pencils containing 10 pencils each at Rs. 100 per box and sold each pencil at a profit 12%. What is the total sale price?