Multiple choice

A card is drawn from a packet of $100$ cards numbered $1$ to $100$. The probability of drawing a number which is a square is ___________.

  1. $\displaystyle\frac{1}{10}$
  2. $\displaystyle\frac{9}{100}$
  3. $\displaystyle\frac{1}{100}$
  4. $\displaystyle\frac{2}{100}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Squares between 1 and 100 are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100. There are 10 such numbers. Probability = 10 / 100 = 1/10.

AI explanation

The perfect squares between 1 and 100 are 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100, giving exactly 10 favorable outcomes. Using the classical probability formula, we divide the 10 favorable outcomes by the 100 total possible outcomes. The probability of drawing a square number is 1/10.

Keep practicing — related questions