Question

What is the answer to A key code must contain 4 letters and 3 numbers. The letters may be any letter of the alphabet. The numbers should be any number from 0 to 5. How many different key codes are there?

A. 17,576,612
B. 104,802,414
C. 68,224,318
D.98,706,816

Answer 1

Answer: 98,706,816 (D)

Explanation:

Answer 2

Answer: Option 'D' is correct.

Explanation:

Since we have given that

Number of letters they can use = 4

Number they can use = 3

Total number of letters we have = 26

Total number from 0 to 5 = 6

So, Number of different key codes is given by

`26* 26* 26* 26* 6* 6* 6\\\\=26^4* 6^3\\\\=98,706,816`

Hence, there are 98,706,816 different key codes.

Thus, Option 'D' is correct.