Permutations and Combinations
GATE Electrical Engineering · 2 questions across 1 years (2018-2018) · 3% recurrence rate
Recurrence sparkline
2018–201820182018
Difficulty mix
med 50%
hard 50%
Question types
MCQ2
All 2 questions on Permutations and Combinations
2018 Q6
An e-mail password must contain three characters. The password has to contain one numeral from 0 to 9, one upper case and one lower case character from the English alphabet. How many distinct passwords are possible?
Hard✓
2018 Q64
Arun, Gulab, Neel and Shweta must choose one shirt each from a pile of four shirts coloured red, pink, blue and white respectively. Arun dislikes the colour red and Shweta dislikes the colour white. Gulab and Neel like a...
Med✓