Practicing Success
Practicing Success
CUET Preparation Today
If the letters of word ‘REGULATIONS’ be arranged at random, the probability that there will be exactly 4 letters between R and E is: |
6/55 3/55 49/55 None of these |
6/55 |
P(required) = $\frac{({^9C}_4.4!)×2!×6!}{11!}=\frac{6}{55}$ |
