AMU Engineering 2020 solved paper Solved Paper

The number of 6 -digits has two pairs of digits and 2 different digits.
The number of ways of selecting 2 digits for two pairs and 2 other digits =‌4C2×‌2C2.
Now, we arrange these six digits which consists of two pairs and 2 differentdigits. This can be done in ‌

6!

2!2!

ways.
∴ Required number of numbers
=‌4C2×‌2C2×‌

6!

2!2!

=1080