Question

To make a 750-piece jigsaw puzzle more challenging, a puzzle company includes 5 extra pieces of box along with the 750 pieces, and those 5 extra pieces do not fit anywhere in the puzzle. If Ramesh selects one piece at random from such a box, what is his probability of selecting the extra piece?

• A. $\frac{1}{5}$
• B. $\frac{1}{755}$
• C. $\frac{1}{750}$
• D. $\frac{5}{755}$
• E. $\frac{5}{750}$

Answer 1

Answer: (D)

$\frac{5}{755}$

Total no. of possible outcomes$=750+5=755$

Out of 755 possible outcomes there are 5 favorable outcomes ,since the box contain 5 extra pieces.

$\therefore$ Probability$=\frac{\text{favorable outcomes}}{\text{Total no. of possible outcomes}}=\frac{5}{755}$