Question
Two students are selected randomly without replacement from
a group of 8 boys and 4 girls. Find the probability that both selected students are girls.Solution
Total students = 12
Number of girls = 4
Required probability = ( 4 C 2 ) / ( 12 C 2 ) = 6 / 66 = 1/11
More Probability Questions
75% of 65% of 7/5 of 2420 = ?
- If (6 × 225 – 432 ÷ 18) ÷ 24 = √2025 – x, what is the value of ‘x’?
3? x 23 ÷ √ 256 = 40.5
(560 ÷ 32) × (720 ÷ 48) = ?
{17 + √2601}/(? + 2) = 17
(36/8)2 × (912/38) ÷ (122/1586) = ?
...34 × 2.5 + 6.4 × 1.5 – 4.8 × 1.2 =?
What value should come in the place of (?) in the following questions?
222 + 322 – 508 = ? * 5
What value should come in the place of (?) in the following questions?
3? = 81 ÷ 312 * 27 * 94
(22% of 1500 + 15% of 2200) = ? x 11
