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The unit digit of the expression (1!)^...

The unit digit of the expression
`(1!)^(1!) + (2!)^(2!) + (3!)^(3!) + ……+ (100!)^(100!)` :

A

0

B

1

C

2

D

7

Text Solution

Verified by Experts

The correct Answer is:
D
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The unit digit of the following expression (1 !)^(99) + (2!)^(98) + (3!)^(97) + (4!)^(96) + …..(99 !)^1 is :

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Find the no. of zeros in experssion : 1^(2) xx 2^(2) xx 3^(3) xx 4^(4) xx ……..xx100^(100)

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