How many numbers lying between 500 and 600 can be formed with the help of the digits 1, 2, 3, 4, 5, 6b when the digits are not be repeated?

Question

How many numbers lying between 500 and 600 can be formed with the help of the digits 1, 2, 3, 4, 5, 6b when the digits are not be repeated? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

There must be 5 at hundred place, now 2 numbers to be chosen from 5 numbers i.e., 5P2=5×4=20

Q. How many numbers lying between $500$ and $600$ can be formed with the help of the digits $1, 2, 3, 4, 5, 6$ b when the digits are not be repeated?

There must be $5$ at hundred place, now $2$ numbers to be chosen from $5$ numbers i.e., $^{5} P_{2} = 5 \times 4 = 20$

Q. How many numbers lying between 500 and 600 can be formed with the help of the digits 1,2,3,4,5,6b when the digits are not be repeated?

There must be 5 at hundred place, now 2 numbers to be chosen from 5 numbers i.e., 5P2​=5×4=20

Q. How many numbers lying between $500$ and $600$ can be formed with the help of the digits $1, 2, 3, 4, 5, 6$ b when the digits are not be repeated?

There must be $5$ at hundred place, now $2$ numbers to be chosen from $5$ numbers i.e., $^{5} P_{2} = 5 \times 4 = 20$