Answer:
5P5×20P15
Step-by-step explanation:
A school bus has 25 seats, with 5 rows of 5 seats.
15 students from the first grade and 5 students from the second grade travel in the bus.
second-grade students occupy the first row.
The 5 students of second grade are to be seated in 5 seats,this can be done in:
5P5 ways where P is the permutation
Now 15 students from first grade are to be arranged in remaining 20 seats
This can be done in:
20P15 ways
Hence, total ways student can be seated is:
5P5×20P15
Answer:
Step-by-step explanation:
Converting 2331 to base 10.
2*93=1458
3*92=243
3*91=27
1*90=1
Adding all to get Ans=172910
Since the exponent of the scientific notation is negative −3-3, move the decimal point 33 places to the left.
0.0025
Hope this Helps.